In this project, you will design and conduct an investigation in order to provide evidence that a feedback mechanism helps a living organism maintain homeostasis.

Background

The internal and external environments of living organisms are constantly changing in many ways. To stay alive, a living thing must maintain homeostasis (internal stability). Feedback mechanisms help living systems maintain this stability. A feedback mechanism does this by sensing a change in a condition and causing a response. Thus, it keeps an organism's internal conditions within a tolerable range. A positive feedback mechanism is one that encourages the change that was detected. A negative feedback mechanism is one that discourages the change.

Both the stimulus for feedback and the response can be internal or external. For example, an increase in a person's heart rate while running is an internal response to an internal stimulus. The upward movement of tree sap in spring is an internal response to an external stimulus. A lizard running under a rock to cool off in hot weather and a leaf's stomata opening and closing as the humidity rises and falls are external responses to external stimuli.

Before You Begin

1. Access and carefully read the document Guidelines for Safely Using Live Animals in Investigations. It can be accessed here, via the link ( https://media.apexlearning.com/One-Off/201907/24/39be3e51-02ee-4424-95cf-8d542ed5b16d.pdf ) the landing page of this activity, and in the Student Resources section of the course. Follow these guidelines as you design and conduct your investigation.

2. Select the type of animal or plant that you will investigate. The organism you select must have the following qualities:

It must be safe for you to handle (if necessary) and easy to care for.

It must display observable responses to external stimuli.

It must be observable without magnification or by using readily available tools (e.g., hand lens, light microscope, video magnifier, or binoculars).

It must be inexpensive, easy to obtain from a local source (such as your yard, a garden center, or a pet supply store), and easy to release or dispose of.

In order to conduct an experiment, you will need to have several individuals in each test group and control group. The chart contains the names of some types of organisms that are appropriate for such a study.

Appropriate Study Organisms

Plants

Animals

Bean, pea, or corn plants grown from seeds


Bedding plants from a nursery, such as cosmos, cucumber, oxalis, petunia, snapdragon, or zinnia

Crickets

Earthworms

Mealworms

Pill bugs

Water fleas (Daphnia sp.)


3. Research the appropriate methods for releasing or disposing of the organisms used in your investigation. You might need to do some research to discover examples of external stimuli and the responses that help organisms maintain homeostasis.

Part I: Design an Investigation (25 points)

1. Write a hypothesis that you will test with your investigation. (5 points)







2. Design an experiment that can test your hypothesis. Describe your design, including the organism and materials you plan to use, the investigation's variables, and your step-by-step procedures. (10 points)












3. Review your experimental design with your teacher. Verify the type of living organism you will study and materials you will need in order to conduct the experiment. Make sure the organisms and materials you need are readily available to you and that you have a plan to later dispose of the organisms and materials. You will also need a place to set up and conduct your experiment. Write a summary of the conversation you had with your teacher. (10 points)












Part II: Conduct Your Investigation (25 points)

After your design is approved, you will need to carefully describe and diagram your procedures and the types of data you plan to collect. Include the initial conditions, such as the source of your subjects, their activity level or location, and the temperature or amount of light or air present. Also include the final conditions of the subjects. Refine and repeat your experiment if your initial data do not provide evidence that your plants or animals responded to a stimulus. Determine whether a positive or negative feedback mechanism is involved. Submit a report to your teacher that includes the following:

Your final investigation design, including:

A list of materials you used during the investigation

A list of all the variables: independent variables, dependent variables, constants, and controls

A step-by-step procedure that includes at least three replications of each treatment

The data you collected, organized into tables and/or charts

The conclusions you were able to draw from your investigation


(giving 50 or more points)

Answers

Answer 1

Materials: Living organism (example: mouse, or plant), Data collection equipment (example: thermometer, pH meter, etc.), Computer or other device for data analysis.

What is equipment?

Equipment is any physical item that is used to carry out an activity, provide a service, or manufacture a product. It can range from small tools and supplies to large machinery and buildings. Examples of equipment include tools, computers, vehicles, furniture, machines, buildings, and systems. Equipment can be used for a variety of purposes, such as to construct a building, to operate a business, to transport goods, to produce energy, to monitor a system, and to provide medical care. The selection of equipment depends on the task to be accomplished and the resources available. Proper use, maintenance and storage of equipment also play a key role in ensuring its effectiveness and efficiency.

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Related Questions

A culture medium on which only gram-positive organisms grow and a yellow halo surrounds Staphylococcus aureus colonies is called a(n)A) selective medium.B) differential medium.C) enrichment culture.D) selective medium and differential medium.E) enrichment culture and differential medium.

Answers

The culture medium on which only gram-positive organisms grow and a yellow halo surround Staphylococcus aureus colonies are called a differential medium. (option B)

A differential medium is a type of culture medium that is designed to distinguish between different types of microorganisms based on their biochemical properties. The yellow halo surrounding Staphylococcus aureus colonies indicates that the bacterium is capable of fermenting the carbohydrates in the medium, producing acid as a byproduct that causes a change in the pH of the medium.

This pH change causes the indicator dye in the medium to change color, resulting in the appearance of a yellow halo. The fact that only gram-positive organisms grow on this medium suggests that it may also be selective for gram-positive bacteria, but this is not the primary purpose of a differential medium.

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How do you think sweating works in increasing temperature

Answers

Sweating does not increase the body temperature it actually helps to keep your internal temperature within an appropriate range and draws heat from the body. As the evaporation takes place rather, more and more heat is absorbed and then body becomes cooler. Thus sweating helps to lower the temperature of the body.


What are some of the ways in which the rainforests have been devastated?

Answers

The ways in which the rainforests have been devastated is Logging, Mining or deforestation for animal agriculture.

The Rainforest is an area of greenery with high amounts of rainfall. This offers a home for the thousands of animal and plant species, but it also contributes significantly to stopping climate change.

In the Rainforest, The use of pesticides and fertilisers have an impact on the local wildlife, plant species, and Indigenous people in the area, in addition to the problems brought on by the removal of such extensive portions of the rainforest.

The native animals, vegetation, and human population all suffer as a result of devastation.

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Which of the following is the base unit for mass?
Select one:

a.
meter


b.
liter


c.
kilogram


d.
kelvin

Answers

Answer:

The base unit of mass is kilogram

Describe why monitoring the growth (a) Describe why monitoring the growth rate of the E. Coli-M bacteria is a useful indicator of the effect of the glycolytic enzyme mutation on the bacteria. Of the E. Coli

Answers

Answer: because the flow of intracellular metabolic components depends on the availability of carbon

Explanation: The response indicates that if the mutation interferes with glucose breakdown, less ATP will be available to the cells. The change in ATP availability will reduce the growth rate and population size of the bacteria , and since it is considered as model organism due to various factors such as its ability to grow fast using cheap media and availability of molecular tools to perform genetic manipulations it is termed as useful indicator

Question 4(Multiple Choice Worth 3 points)
(01.02 MC)
Which step of the scientific method would be most helpful in processing a crime scene?
O Examine results
O Make observations
O Test your hypothesis
O Set up an experiment
Jy

Answers

The step of the scientific method that would be most helpful in processing a crime scene is "Make observations".

what is crime scene ?

A crime scene is a physical location where a crime has been committed or suspected to have been committed. It can be a wide range of locations, including a public place like a street or park, or a private location like a home or business. Crime scenes can involve a variety of different crimes, such as homicide, robbery, assault, burglary, and others. The purpose of processing a crime scene is to collect evidence, document the scene, and reconstruct what happened to aid in an investigation, and ultimately to bring those responsible to justice.

The step of the scientific method that would be most helpful in processing a crime scene is "Make observations". When processing a crime scene, it is important to carefully and systematically observe the scene and collect all relevant information and evidence. This can include noting the position and location of items, taking photographs, and collecting physical evidence. These observations will help the investigator to form a hypothesis or theory about what happened, which can then be tested through further investigation and analysis.

The other steps of the scientific method (such as setting up an experiment or testing a hypothesis) may also be useful in certain situations, but making accurate observations is the critical first step in any investigation, including a criminal investigation.

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What are the cell organelles and each of their functions?

Answers

Answer:

Cell organelles are specialized structures within a cell that play a vital role in the cell's overall function. There are several different types of organelles, each with its own specific role. The nucleus is the control center of the cell and houses the cell's genetic material. The ribosome is responsible for producing proteins. The endoplasmic reticulum manufactures and transports molecules. The mitochondria provide energy for the cell. The Golgi apparatus is responsible for sorting and packaging molecules for transport. The lysosomes are responsible for breaking down large molecules. The vacuoles store nutrients and other molecules. The cytoskeleton is a network of protein fibers that helps maintain the shape of the cell and aids in transport. Finally, the chloroplast is responsible for photosynthesis in plant cells.

Rock fragments that are tumbled and carried over long distances by this stream are most likely becoming

Answers

Sedimentary rocks, they are becoming more rounded, smoother and smaller.

A student runs an experiment to figure out if the size of a wire changes how well i
the resistance in the wires.
s electricity. She uses 5 different widths of copper wire and attaches each to a multimeter to measure the resistance in the wires. The data collected is shown below:
Wire 1- 12 Ohms
Wire 2- 17 Ohms
Wire 3- 9 Ohms
Wire 4- 14 Ohms
Wire 5- 6 Ohms
What is the independent variable in this experiment?
A The multimetet.
B. The resistance values.
C. The material of the wires, copper.
D. The widths of the wires.

Answers

D. The widths of the wires.

Where is the chromatin during interphase

Answers

During interphase, chromatin is loosely distributed throughout the nucleus.

The next generation of lizards has 1092 individuals with green scales and 108 individuals with blue scales. is the population in hardy-weinberg equilibrium? solve for p and q.
Compare the frequencies here with those in the previous question. Then answer: Is the population in Hardy-Weinberg Equilibriam (yes or no)
PREVIOUS FREQUENCIES::
p=0.8
q=0.2
p^2=0.64

Answers

The population is not in hardy weinberg equilibrium, because it does not match the previous generation.

What is the population in Hardy-Weinberg Equilibrium?

The frequency of individuals = individuals/total population

The frequency of Green individuals = 1092/1200

The frequency of Green individuals = 0.91

                                                       q² = 0.91

                                                    √ q² = √0.91

                                                         q = 0.953

By using the first Hardy-Weinberg equation:

                                                                p + q   = 1

                                                                p + 0.953 = 1

                                                                p   = 1 - 0.953

                                                                p    = 0.046

Therefore, the population does not match the previous generation.

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To define a term in a way that can be examined and measured, is a process known as:.

Answers

The process of defining a term in a way that can be examined and measured is known as operationalization.

The scientific method's operationalization phase enables researchers to translate abstract ideas or hypotheses into verifiable, quantifiable realities.

For instance, in order to explore the idea of happiness, a researcher must first operationalize the concept in a way that allows for measurement. This can entail coming up with a scale from 1 to 10 for people to rate their degree of happiness, or planning an experiment to check for physiological indicators of happiness like cortisol levels or brain activity.

In order to ensure that the findings of their studies are significant and applicable to different populations, researchers must be able to assess the validity and reliability of their measurements, which is why operationalization is so vital.

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What incomplete dominance effects on phenotype

Answers

Incomplete dominance effects on phenotype is that it leads to the production of an offspring which has intermediate phenotypes.

What is Incomplete dominance?

This is also referred to as partial dominance and it is a form of gene interaction in which both alleles of a gene at a locus are partially expressed, often resulting in an intermediate or different phenotype.

It results in heterozygotes with intermediate phenotypes, as in the case of snapdragons when parents with red flowers and white flowers are crossed resulting in heterozygous offspring with pink flowers thereby making it the correct choice.

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5. In humans, normal skin color (A) is dominant over albino (a) and diabete
has been found to be inherited (in some cases) through a recessive
allele. A diabetic albino man marries an normal woman whose mother
was an albino and whose father was diabetic. What are the genotypes
of the man and woman? What percentage of their children would be
expected to be both non-diabetic and have normal color?

Answers

The genotype of the man would be Aa (one dominant and one recessive allele for albinism) and the genotype of the woman would be Aa (one dominant and one recessive allele for albinism). The percentage of their children that would be expected to be both non-diabetic and have normal color would be 75%, as this would be the result of two Aa genotypes.

What is an element? Is water (H2O) considered an element?

Answers

Answer: a element is a part or aspect of something abstract , especially one that is essential or characteristic YES water is an element

Explanation:

Answer: yes it is..

Explanation:

If a population grows larger then it’s evironmental carrying capacity then

Answers

If a population exceeds carrying capacity, the ecosystem may become unsuitable for the species to survive. If the population exceeds the carrying capacity for a long period of time, resources may be completely depleted. Populations may die off if all of the resources are exhausted.

Which of the following would increase the severity of a thunderstorm?

Answers

When warm, humid air rises into cold air, thunderstorms are created. As the heated air cools, condensation occurs, which is the formation of tiny water droplets from water vapor.

What is Thunderstrom?

The atmosphere's cooled air sinks, warms, and then rises once more. A convection cell is a circuit of rising and descending air. A cloud will develop if this occurs just a little bit. A thunderstorm may develop if this occurs in an environment with lots of air and moisture.

One convection cell, several convection cells, or even one very large and powerful convection cell can make up a thunderstorm.

The three different forms of thunderstorms—single-cell, multi-cell, and supercell—are described here, according to their structural makeup. Thunderstorms formed by a single convection are known as single-cell thunderstorms.

Therefore, When warm, humid air rises into cold air, thunderstorms are created. As the heated air cools, condensation occurs, which is the formation of tiny water droplets from water vapor.

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how are populations, species, communities, and ecosystems related? Answer in complete
sentences below.

Answers

Answer:

it’s B

Explanation:

Answer:

An organism is a single living thing, a population is all of the organisms of the same species in the same place at the same time, a community is all populations in the same place at the same time (all living things), and an ecosystem is the reactions between living and nonliving components in a given area.

Explanation:

Hope this helps! =D

The site of erythropoiesis changes during development. Embryonic synthesis occurs predominantly in the ____ and gradually shifts to the _____ in the fetus.

Answers

The site of erythropoiesis changes during development. Embryonic synthesis occurs predominantly in the yolk sac and gradually shifts to the spleen and liver in the fetus.

Erythropoiesis is a complex process which is tightly regulated, originating in the bone marrow from a multipotent stem cell and terminating in a mature, enucleated erythrocyte.

Haematopoiesis relates to the production of cells which circulate in the bloodstream. Especially, erythropoiesis is the process of production of red blood cells (erythrocytes). Erythropoiesis is controlled mainly by the hormone erythropoietin (EPO), which is a glycoprotein cytokine.

The body on average produces 2.5 billion red cells/kg/day. Erythrocytes are produced from a complex line of cells, and the rate of their production is tightly regulated to make sure adequate but not excessive numbers of red blood cells are produced.

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How do water particles in a wave move? What is the relationship between wind and ocean waves

Answers

Answer:

this answer is below

Explanation:

HowStuffWorks: Waves: The Physics of Waves

The particles move in a circle in a clockwise direction if the wave is moving in front of you from left to right. They climb the wave, cross its summit, and descend to its crest. When the wind blows on the open water, circular waves in the ocean begin to form.

Water and minerals are transported from the roots to the rest of the plant through the phloem.

Answers

Answer:

False

Explanation:

Xylem transports water, minerals, and nutrients from the soil to all the plant parts. There are two types of "transport" tissues in plants- xylem and phloem. Water and solutes are transported by the xylem from the roots to the leaves, and food is transported from the leaves to the rest of the plant by the phloem.

he following diagram shows the branching tree diagram for some animals.

A slanting line is shown. There are five lines drawn vertically on this line at equal intervals. Shark, Frog, Kangaroo, Lion and Chimpanzee are written on top of each vertical line in order from left to right. Common Ancestor is written on the left end of the line. There is a black circle between each pair of these vertical lines. The first black circle is before Shark and says Vertebrae. The second black circle is between Shark and Frog and says Lungs. The third black circle is between Frog and Kangaroo and says Mammary gland. The fourth black circle is between Kangaroo and Lion and says Placenta. The fifth black circle is between Lion and Chimpanzee and says Large brain.

Which two organisms share the greatest number of derived characteristics?

Frog and kangaroo
Kangaroo and chimpanzee
Lion and chimpanzee
Shark and chimpanzee

Answers

The two organisms that share the least number of derived characteristics are Kangaroo and chimpanzee.

What is an organism?

Taxonomy divides living things into categories like multicellular animals, plants, and fungus, or unicellular microbes like protists, bacteria, and archaea.All kinds of creatures are capable of responding to stimuli in some capacity and reproducing, growing, and developing. Multicellular organisms that distinguish specialised tissues and organs throughout development include squids, tetrapods, vascular plants, beetles, and mushrooms.Prokaryotes and eukaryotes are both types of unicellular organisms. The two distinct domains of bacteria and archaea are prokaryotes.

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Bacteria in the GI tract perform all of the following functions except:A.) protecting people from infectionB.) producing biotinC.) producing vitamin KD.) producing bile

Answers

Bacteria in the GI tract perform all the following functions except producing bile. Therefore, the correct option is D.

What is the GI tract?

The GI tract is also called the Gastrointestinal tract. It is a path or the passage of the digestive system which begins from the mouth where the food enters and ends at the anus where the undigested food is expelled out of the body. It is also called alimentary canal.

Bacteria in the GI tract play an important role in human health by performing a wide range of functions. Some of the functions that these bacteria perform include producing biotin, which is a B vitamin that is significant for healthy skin, hair, and nails, and producing vitamin K, which is essential for blood clotting.

However, producing bile is not a function of the bacteria in the GI tract. Bile is produced by the liver and stored in the gallbladder. Therefore, the correct option is D.

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The probability of fusion occurring is greatly enhanced when appropriate nuclei are brought close together, but mutual coulomb repulsion must be overcome. This can be done using the kinetic energy of high-temperature gas ions or by accelerating the nuclei toward one another.

Answers

The methods used to overcome the mutual coulomb repulsion and enhance the probability of fusion occurring between appropriate nuclei include the following:

Increasing the temperature of the nuclei raises their kinetic energy, allowing them to overcome the repulsion and collide with sufficient force to overcome the repulsion and fuse. Compressing the nuclei increases the probability of fusion, as it brings the nuclei closer together, reducing the mutual repulsion. Confining the nuclei within a small space increases the probability of collision, reducing the average distance between the nuclei and increasing the chance of fusion. Magnetic confinement is used in magnetic fusion energy devices, where the nuclei are confined in a plasma using magnetic fields. In inertial confinement fusion, the nuclei are confined within a small space and subjected to an intense burst of laser or particle-beam energy, which compresses the nuclei and initiates fusion. These methods aim to reduce the distance between the nuclei and increase their collision probability, allowing them to overcome the mutual coulomb repulsion and fuse.

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The complete Question is:

What are the methods used to overcome the mutual coulomb repulsion in order to enhance the probability of fusion occurring between appropriate nuclei?

all of the following hormones increase or decrease plasma glucose concentration by regulating glycogenolysis (converting glycogen to glucose) except?

Answers

Insulin is the hormone that controls glycogenolysis to lower plasma glucose levels. Insulin is the solution as a result.

By encouraging liver glycogenolysis, cortisol, glucagon, and epinephrine all raise plasma glucose levels. Only insulin, out of all the hormones mentioned, lowers plasma glucose levels via controlling glycogenolysis. The pancreas, an organ behind the stomach, produces the hormone insulin in its beta cells. By boosting the body's cells' ability to absorb glucose, it controls the quantity of glucose in the blood. As we eat, the food's carbs are broken down into glucose, which is then absorbed into the circulation. Insulin is then released by the pancreas in response, telling the cells to either take up glucose from the blood and utilise it as fuel immediately or store it for later use. Moreover, insulin is essential for controlling how proteins and lipids are metabolized.

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The above question is incomplete. The complete question is given below-
All of the following hormones increase or decrease plasma glucose concentration by regulating glycogenolysis (converting glycogen to glucose) EXCEPT?
Cortisol
Glucagon
Epinephrine
Insulin

1
pH = 6.65
Many freshwater
organisms can live in
water with a pH of
between 6.5 and 9.0.
Geraldo wants to model the effect of acids on the pH o
water for a group of students.
Which pollutant should Geraldo add to the water?
What will the pH reading be after Geraldo adds the
pollutant?

Answers

Geraldo  would have to add an acidic pollutant of pH about 3.0 and cause the pH of the water body to fall.

How does pH affect water bodies?

The pH of a water body can have significant impacts on the biotic and abiotic components of that system. pH is a measure of the acidity or basicity of a solution, and it can affect the solubility of various chemicals, the availability of nutrients, and the survival and growth of aquatic organisms.

A low pH (acidic conditions) can cause the release of toxic metals, such as aluminum and iron, from the soil into the water. Acidic conditions can also harm fish and other aquatic organisms by reducing the availability of essential nutrients, such as calcium, and by causing harm to gill structures and other tissues.

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Create a hypothesis using the following info:

You have had some practice using the compound light microscope to view a variety of objects. Now you are ready to prepare your own slide of the plant cell under isotonic and hypotonic solution, and view it using the compound light microscope. From learning about diffusion and osmosis, you know that plant and animal cells are filled with cytoplasm, which is a jelly-like fluid that consists of water and solutes (salts, sugars, carbon dioxide, fat droplets, etc). Cells are surrounded by extracellular fluid, which also consists of water and solutes. The balance between the water and solutes in the cytoplasm and extracellular fluid is achieved through the process of diffusion and osmosis. In this lab, you will find out what happens to onion cells when they are placed in a hypotonic or hypertonic solution.

Answers

Hypothesis: When onion cells are placed in a hypotonic solution, they will absorb more water due to osmosis, causing the cells to swell and increase in size. Conversely, when onion cells are placed in a hypertonic solution, they will lose water through osmosis, causing the cells to shrink and decrease in size. This will be observed through the use of the compound light microscope.

what is koilocytosis​

Answers

Koilocytosis is the term used to describe the conclusion of particular cellular processes brought on by human papillomavirus infection (HPV)

What is Koilocytosis in detail?

Koilocytosis is a histological term that refers to the changes that occur in the appearance of the cells that line the cervical transformation zone, which is a part of the cervix. It is characterized by the presence of small cytoplasmic vacuoles, or "hollows," that give the cells a fragmented or "blown up" appearance.

Koilocytosis is often seen in cervical cells that are infected with certain strains of the human papillomavirus (HPV), particularly the high-risk HPV types that can cause cervical cancer. The presence of koilocytosis can indicate a potential precancerous condition and may warrant further evaluation and treatment.

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In science, graphs are often used to display data collected from an experiment. Which of the following is true regarding a graph? Select one:
a. The dependent variable is plotted on the x-axis.
b. The horizontal axis is known as the ordinate.
c. Independent variables may include age or time.
d. Graphs always involve plots of individual data points.
e. Most graphs are plotted on three axes

Answers

In science, graphs are often used to display data collected from an experiment and the horizontal axis is known as the ordinate. The intersection of the x- and y-axes is known as the origin.

Experiments demonstrate what transpires when a specific component is altered, illuminating cause-and-effect connections. No matter how many different goals and objectives an experiment may have, each one depends on a repeatable method and a logical analysis of the findings. Additionally, experiments are performed outside. The x-axis is represented by a horizontal number line, and the y-axis by a vertical number line. The perpendicular intersection of these two axes results in the coordinate plane. The x- and y-axes are also known as the ordinate and abscissa, respectively. The vertical axis is sometimes known as the y-axis.

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Regular lawn mowing selects for short-headed rather than long-headed dandelions because:
a. tall flowers spread their seeds farther
b. tall flowers cannot reproduce
c. short flowers can reproduce
d. short flowers spread their seeds farther
e. short flowers have less competition when the lawn is mowed often

Answers

The answer is (a) tall flowers spread their seeds farther.

Regular lawn mowing selects for short-headed rather than long-headed dandelions because tall flowers with long heads produce seeds that are further away from the base of the plant, making them more likely to be removed by lawn mowers. This reduces the chances of the tall flowers producing offspring, which decreases their overall fitness in the lawn environment. In contrast, short-headed dandelions have their seeds closer to the base of the plant, making them less likely to be removed by lawn mowers. This allows the short-headed dandelions to have a higher chance of producing offspring and passing on their traits, leading to the selection of short-headed dandelions in lawns that are regularly mowed.

Option (b) is not correct because tall flowers can reproduce, but they may be less successful at doing so in a lawn environment that is regularly mowed.

Option (c) is not correct because both short and tall dandelions can reproduce, but the likelihood of successful reproduction may differ depending on the characteristics of the plant.

Option (d) is not correct because the distance that seeds are spread is not necessarily related to the size of the flower head.

Option (e) is not correct because the height of the plant is not necessarily related to its ability to compete with other plants in the lawn environment.

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what is - 3x > 15 equal to Utilisez une forme de ce ou a pour complter ces dialogues en franais parl.1. ---- Ces jumeaux sont trs diffrents. --- Oui, ___ est amusant.2. --- Qui sont les petits qui courent partout?--- ___ sont mes jeunes neveux.3. ---- Tu veux aller au parc ou la piscine--- ___ n'a pas d'importance.4. ---- C'est ton frre l-bas?--- Non, ___ ressemble plutt mon cousin. in a fate mapping experiment in the frog, a single blastomere was injected with a fluorescent dye at the 32-cell stage. the following day, fluorescent cells were observed in the brain and in the skin of the tadpole. what conclusion can be drawn about the developmental state of the injected cell at the time of injection? j181 Need help pls What gases are found in the troposphere? if the average process size is 8gb, would you use a one-level, two-level, or three-level page table? why? how would your calculated value for the molecular weight of your unknown been affected if a small quantity of the unknown stuck to the metal stirring rod and failed to dissolve in the benzophenone? which of these grist components is sometimes used because it is gluten free?Malted wheatMalted Shorgum Malted BarleyMalted Oats Which relationship results in the highest level of evaporation from Earths water reservoirs? A.greatest surface area and most direct sunlightB.greatest surface area and least direct sunlightC.least surface area and most direct sunlightD.least surface area and least direct sunlight 1. Describe what the global codex is and what is the significance of having a code. Include the law that required employers to implement a code of conduct the agreement between bob and cathy says nothing about assignment. may bob assign his claim to hardknuckle? 2/12 Help me answer please two paintings in an art display have shapes that are similar figures. the similarity ratio is 9:7. the perimeter of the smaller painting is 6 meters. which is the perimeter of the larger painting to the nearest tenth? 42-kg gionny is trying to take off a lug nut off his tire using a tire-iron. what is the torque he can apply, in newton-meters, if he puts his whole body-weight on the tire-iron 0.31-m from the lug nut? Why are lymph nodes removed during cancer surgery? please help please.. What is the value of k such that (x + x - 9x - 36) + (x + 4) has a rernainderof zero? Show your work. The table represents a function.A 2-column table with 4 rows. The first column is labeled x with entries negative 4, negative 1, 3, 5. The second column is labeled f of x with entries negative 2, 5, 4, negative 8.What is f(5)?8118The table represents a function.A 2-column table with 4 rows. The first column is labeled x with entries negative 4, negative 1, 3, 5. The second column is labeled f of x with entries negative 2, 5, 4, negative 8.What is f(5)?8118 pour le carnaval un fleuriste dispose de 283 roses et 397 tulipes. il dcide de dcorer de faon identique le plus grand nombre de chars pour accompagner les carnavalier. aprs avoir dcorer le chars il lui reste 3 roses et 2 tulipes. combien a t-il dcorer de chars et quelle est la composition de chaque dcor? double double toil and trouble fire burn and cauldron bubble are meaning