The actual length of an animal cell is 0.01 mm. If you wanted to draw adiagram of the cell to scale using a magnification of x2500, the length of your drawing have to be 25mm.
Magnification = Image size ÷ Actual size
Given,
Actual size, A = 0.01mm
Magnification, M = x2500
Then,
[tex]I = MX A\\I = 2500 X 0.01\\I = 25[/tex]
The Image size, I = 25mm.
Magnification is the method of increasing the alleged size, not the actual size, of an object. This increase is quantified by a premeditated number called magnification. When the magnification number is smaller than one, it directs to a decrease in size, occasionally called de-magnification.
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-Sketch the difference between animal cell and plant cell.
An individual with type b blood has ______ on the plasma membranes of the red blood cells and __________ in the plasma.
An individual with type b blood has Antibody b on the plasma membrane of the red blood cells and antigen A in plasma.
What is the meaning of blood group?There are mainly four types of blood groups A, AB, O, and B. Blood group O is the universal donor, and blood group AB is the universal receiver.
Blood group A has antibody A on the plasma membrane of the red blood cells and Antigen B in plasma. Blood group AB does not have any antibodies in plasma. Blood group O does not have any antigen in red blood cells.
Blood groups are classified as Rh positive and Rh negative on basis of the presence and absence of Rh antigen. If Rh antigen is present blood group is called Rh positive and if Rh antigen is absent it is called Rh negative.
Therefore, An individual with type b blood has Antibody b on the plasma membrane of the red blood cells and antigen A in plasma.
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Now that the lab is complete, it is time to write your lab report. The purpose of this guide is to help you write a clear and concise report that summarizes the lab you have just completed.
The lab report is composed of two sections:
Section I: Overview of Investigation
o Provide background information.
o Summarize the procedure.
Section II: Observations and Conclusions
o Include any charts, tables, or drawings required by your teacher.
o Include answers to follow-up questions.
o Explain how the investigation could be improved.
To help you write your lab report, you will first answer the four questions listed below based on the lab that you have just completed. Then you will use the answers to these questions to write the lab report that you will turn in to your teacher.
You can upload your completed report with the upload tool in formats such as OpenOffice.org, Microsoft Word, or PDF. Alternatively, your teacher may ask you to turn in a paper copy of your report or use a web-based writing tool.
Questions
Section I: Overview of Lab
1. What is the purpose of the lab?
2. What procedure did you use to complete the lab?
Outline the steps of the procedure in full sentences.
Section II: Observations and Conclusions
3. What charts, tables, or drawings would clearly show what you have learned in this lab?
Each chart, table, or drawing should have the following items:
a. An appropriate title
b. Appropriate labels
4. If you could repeat the lab and make it better, what would you do differently and why?
There are always ways that labs can be improved. Now that you are a veteran of this lab and have experience with the procedure, offer some advice to the next scientist about what you suggest and why. Your answer should be at least two to three sentences in length.
Writing the Lab Report
Now you will use your answers from the four questions above to write your lab report. Follow the directions below.
Section I: Overview of Lab
Use your answers from questions 1 and 2 (above) as the basis for the first section of your lab report. This section provides your reader with background information about why you conducted this lab and how it was completed. It should be one to two paragraphs in length.
Section II: Observations and Conclusions
Use your answers from questions 3 and 4 (above) as the basis for the second section of your lab report. This section provides your reader with charts, tables, or drawings from the lab. You also need to incorporate your answers to the follow-up questions (from the Student Guide) in your conclusions.
Overall
When complete, the lab report should be read as a coherent whole. Make sure you connect different pieces with relevant transitions. Review for proper grammar, spelling, punctuation, formatting, and other conventions of organization and good writing.
I'll give someone brain if they answer right
The purpose of this lab is to investigate the effect of temperature on the activity of an enzyme, specifically catalase, which breaks down hydrogen peroxide into water and oxygen gas. The experiment aims to determine the optimum temperature range for catalase activity and to observe the effect of temperature beyond this range.
What procedure did you use to complete the lab?To complete this lab, we first prepared a solution of hydrogen peroxide and collected it in a gas syringe. We then added a small amount of catalase to the hydrogen peroxide solution and placed the syringe in a water bath at a specific temperature. The reaction between the enzyme and the substrate produced oxygen gas, which displaced the water in the syringe. We recorded the volume of oxygen gas produced at different temperatures to investigate the effect of temperature on enzyme activity. The temperature range we tested was from 10°C to 60°C, with increments of 10°C.
What charts, tables, or drawings would clearly show what you have learned in this lab?A line graph with temperature on the x-axis and volume of oxygen gas produced on the y-axis would clearly show the effect of temperature on enzyme activity. The graph should have the following items:
a. Title: Effect of Temperature on Catalase Activity
b. X-axis label: Temperature (°C)
c. Y-axis label: Volume of Oxygen Gas Produced (cm3)
If you could repeat the lab and make it better, what would you do differently and why?If I could repeat this lab, I would increase the number of temperature increments from 10°C to 5°C or even 2°C. This would provide more precise data and allow for a more accurate determination of the optimum temperature range for catalase activity. Additionally, I would use a more sensitive instrument for measuring the volume of oxygen gas produced, such as a gas burette or a digital gas sensor. This would reduce measurement errors and improve the reliability of the results.
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Oxygen and carbon are:____.
a. rarer than almost all other elements
b. found only on worlds close to a star
c. the third and fourth most abundant elements in the universe
What is function/purpose of RNA
Functions of RNA :
Regulation of gene expressionProtein codingProduction of regulatory moleculesDevelopment of gametes by the ncRNA (non-coding RNA)In the psychoanalytic theory of sigmund freud, the __________, which is the basic emotional and psychic energy of life, is believed to be constituted by life instincts.
Libido is the basic emotional and psychic energy of life, is believed to be constituted by life instincts. This is according to the psychoanalytic theory of sigmund freud,
In psychoanalytic theory, the energy produced by sexual and survival instincts is referred to as libido. Sigmund Freud claimed that the libido is the motivation behind all conduct and is a component of the id. Despite the obviously sexual connotations that the word "libido" now has, Freud used it to refer to all psychic energy, not simply sexual energy.
According to Freud, the only aspect of personality that exists from birth is the id. He proposed that the id was a source of unconscious, primal energy. The id seeks pleasure and expects that its desires be met right away. The id is the motivation behind our desires and impulsive actions.
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Pasteur observations that protozoa were related to the wilkworm disease strengthened his belief in the:_____
Pasteur observations that protozoa were related to the wilkworm disease strengthened his belief in the germ theory of disease. Protozoa (plural protozoa or protozoans) is an informal word for a group of single-celled eukaryotes that are either free-living or parasitic and feed on organic substances such as other microbes or organic tissues and waste.
Historically, protozoans were considered "one-celled animals" because they frequently exhibit animal disease like behaviors such as motility and predation and lack a cell wall, which plants and many algae do. When Georg Goldfuss introduced the taxon Protozoa in 1818, it was erected as a class inside the Animalia, with the word 'protozoa' meaning "first animals."
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An unconditioned stimulus ____. a.is paired with a conditioned response b.requires conscious effort c.automatically triggers a physiological reflex d.is acquired through practice
An unconditioned stimulus c. automatically triggers a physiological reflex
What is matched with an unconditioned stimulus?In Pavlovian conditioning, an originally neutral stimulus that is paired with the unconditioned stimulus is known as a conditioned stimulus. For instance, a tone was heard shortly before the air puff reached the cornea of the eye.
The meal served as the unconditioned stimulus in Pavlov's experiment. A reflexive response to a stimuli is referred to as an unconditioned response. In Pavlov's experiment, the dogs' unconditioned reaction was their salivation for food.
Unconditional behaviour does not require learning; it is innate and natural. Only until an unconditioned stimulus has developed a mental association with a conditioned stimulus can a person acquire a conditioned response.
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Liam notices that his phone battery is depleting faster than he remembers it should. he suspects that running certain apps on his phone is using up his phone battery.
Yes, this could be the possible reason for the draining up of phone's battery faster than normal.
What is battery?
One or more electrochemical cells with external connections for powering electrical equipment make up an electric battery, which is a source of electric power. A battery's positive terminal serves as the cathode and its negative terminal serves as the anode when it is supplying electricity.
Numerous apps will undoubtedly take up a lot of storage on your cellphone. Let's say you have 60–70 apps, and 18–25 of them require routine synchronization for updates and notifications.
Therefore, even after you have closed all of the apps, they continue to run in the background to notify the feeds. Additionally, background updates use both data and battery.
Therefore, more apps mean more instances of background updating and running. And as a result, it will use battery power proportionally.
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What changes occur in extracellular and intracellular fluid compartments during dehydration?
Answer:
cellular shrinkage and metabolic dysfunction.
Explanation:
In dehydration, fluid from the extracellular compartment is depleted first, followed by fluid from the intracellular space. Fluid loss from the intracellular space results in cellular shrinkage and metabolic dysfunction. Dehydration occurs because of decreased water intake, increased fluid loss, or both.
The number of grams of carbohydrates, protein, and fat in foods and beverages determines its number of:_________
The number of grams of carbohydrates, protein, and fat in foods and beverages determines its number of calories (i.e., consumed calories).
What do calories mean?The term 'calories' makes reference to energy obtained by consuming foods, which contain different groups of macronutrients.
The three major groups of these macronutrients include carbohydrates, protein, and fat, which provide 4 calories per gram of carbohydrates or proteins, and 9 calories per gram of fats.
In conclusion, the number of grams of carbohydrates, protein, and fat in foods and beverages determines its number of calories (i.e., consumed calories).
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Cardiac muscle contracts as a unit because the electrical activity in the heart spreads over the entire muscle due to____________.
Cardiac muscle contracts as a unit because the electrical activity in the heart spreads over the entire muscle due to gap junctions in intercalated discs.
Heart is formed by a specialized tissue called myocardium. The myocardium is responsible for pumping blood through the heart. It contracts and expands involuntarily in response to electrical impulses from the nervous system. The heart has another tissue that contains pacemaker cells. These cells are responsible for generating electrical impulses. They determine the heart rate by controlling the frequency of pumping up of blood.
The myocardium, as a whole of cardiac muscle, is held together by desmosomes. Desmosomes are another specialized structure found inside the intercalated discs.
Two cardiac muscles are connected by intercalated discs. Intercalated discs have a gap junction inside them which transfers the electrical impulse from one cardiac muscle cell to another.
Therefore, cardiac muscle contracts due to the action of gap junctions inside the intercalated discs.
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can be organized around several themes. as the biological hierarchy builds from molecules on up to ecosystems, each level has blank that result from interactions among component parts. life's basic unit of blank is the cell, which occurs in two basic forms − prokaryotic and eukariotic. as organisms interact with the environment, blank cycle within an ecosystem, while blank flows one way from sunlight → chemical energy → heat. according to the core theme of blank, all of life is related by common descent. life has diversified as blank has led to the gradual accumulation of adaptations that fit populations to the environment.
The fill in the blanks will be filled as following-
can be organized around several themes. as the biological hierarchy builds from molecules on up to ecosystems, each level has emergent properties that result from interactions among component parts. life's basic unit of structure and function is the cell, which occurs in two basic forms − prokaryotic and eukaryotic.
as organisms interact with the environment, nutrients cycle within an ecosystem, while energy flows one way from sunlight → chemical energy → heat. according to the core theme of evolution, all of life is related by common descent. life has diversified as emergent properties has led to the gradual accumulation of adaptations that fit populations to the environment.
Emergent properties are the critical attributes of the biological systems, which helps us understand the interaction at a larger level.
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According to selye's general adaptation syndrome, once the initial surge of energy from the fight-or-flight response recedes, the individual enters the ________ stage.
Once the initial surge of energy from the fight-or-flight response recedes, the individual enters the resistance stage.
What is Selye's general adaptation syndrome?The three stages of general adaption syndrome are as follows. Your body responds to each of these phases in a unique way. The physiological adjustments your body makes throughout this process may have detrimental long-term effects.
The response stage is followed by the resistance stage. Your body uses the parasympathetic nervous system in this stage to try to stop the alterations that happened during the response stage. It usually happens after whatever was stressing you out has subsided.
The response stage will continue if you continue to feel anxious. Your body starts to slow down your heart rate and blood pressure during the resistance stage. Additionally, it lessens the production of cortisol and adrenaline.
Therefore, the individual entered the resistance stage after the fight or flight response.
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First source of energy in living things.
A client tells the nurse that the client has bugs in the client's brain and asks the nurse if the nurse can see them. which response by the nurse is most therapeutic?
Reaction of the nurse: "No, I don't see any bugs." That sounds scary for you," is really therapeutic.
Briefing:The individual experiencing hallucinations is distracted and terrified by what they hear or see. The nurse cannot argue away, reject, or ignore the client's hallucination since it is genuine to them. Nurses make it plain that they do not detect the voices or see the visual images, despite the fact that the client believes the hallucination to be real. Nurses do, however, express concern that the client is concerned, upset, or scared by the hallucination.
How do hallucinations function?A hallucination is a false impression of objects or events encompassing your senses: sight, audio, smell, touch and taste. Although hallucinations appear real, they are not. Chemical interactions and/or anomalies in your brain produce hallucinations.
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A farmer growing corn must water the corn crop regularly due to
carrying capacity
natural selection
interspecific competition
intraspecific competition
A farmer who is growing corn crops will need to water his crops regularly due to intraspecific competition.
What is Intraspecific competition?Intraspecific competition refers to the competition that occurs among the members of the same species for common resources. It increases in populations at higher densities. Intraspecific diversity is the variation within a population from the same species. This competition leads to reduction in fitness for both individuals, but the more fit individual survives and is able to reproduce.
The corn compete with each other for water, and therefore, the farmer needs to water them regularly to meet their water requirement.
Hence, the correct answer is option D.
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If someone had a cut in their skin through which a bacterium entered, but that bacterium was then destroyed by a neutrophil, this would be an example of?
Failed external innate immunity, but successful internal innate immunity
What is Immunity ?Immunity in biology refers to an organism's capacity to fend off harmful microbes. Both specific and generic components contribute to immunity. Regardless of their antigenic makeup, the nonspecific components serve as barriers to or eliminators of a variety of infections.
There are two types of immunity: active and passive. Active immunity happens when our own immune system defends us against a pathogen. When we are shielded against a virus by immunity we have acquired from another person, this is known as passive immunity.Learn more about Immunity here:
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Leach ate can sink into groundwater and flow into the waterways when landfills are not lined.
true or
false
The sink into groundwater and flow into the waterways when landfills are not lined. TRUE
Groundwater runs slowly and continuously through the open pores in soil and rock. If a landfill contaminates groundwater, a plume of contamination will occur.Proper lining of landfills is crucial to keep our groundwater safe. Tests in the middle eastern countries have showed that shredding solid waste material has helped the decomposition process, elevated the rate of biological degradation. Also, allowing the waste to degrade for a week before covering with soil can improvise the results. Lining landfills, to stop leakage is a crucial step, as is continued monitoring. Proper hazardous waste disposal must be occure if the entire contamination process is going to be not waste.To know more about landfills visit :
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The rigid ______ of most bacterial cells surrounds the cell membrane, protecting the cell and giving the cell shape.
Answer:
cell wall
Explanation:
What is the position of the body when it is in the ""normal anatomical position?"".
When the body is in the ""normal anatomical position" it refers to as hominid anatomy.
The body is referred to as being in what is known as the typical anatomical position when discussing hominid anatomy. The typical anatomical stance for a human is standing with their feet together and pointing forward, without any long bones being crossed from the observer's point of view. Human anatomy and physiology can be explained in a straightforward and consistent manner using standard anatomical positions. Many anatomical terminology are used to describe the relative placement of different appendages in relation to the standardized position while analyzing an individual's anatomy.Learn more about the anatomy with the help of the given link:
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10. darius wanted to test how the mass of a paper airplane affected the distance it would fly. paper clips were
added before each test flight. as each paper clip was added, the plane was tested to determine how far it would
fly.
Here, Independent Variable is Mass of plane, Dependent Variable is Distance plane flies, control - Plane without paper clips, constant is Type of paper, how it was thrown.
What are variables?
An eye tracking experiment must include variables. Anything that can be changed or be altered is a variable. To put it another way, it refers to any variable that can be changed, taken into account, or measured in an experiment.
As mentioned in question, mass of the plane is constant or fixed it does not depend on anything so it is an independent variable. whereas, the distance plane flies is dependent on the mass of plane so it is a dependent variable.
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Digestion must occur before the effects of alcohol can be felt. question 17 options:
a. true
b. false
It is false that digestion must occur before the effects of alcohol can be felt.
Alcohol is the beverage that contains ethanol and is generally produced by the fermentation of certain substances. Alcohol is a substance that does not require digestion inside the body. It is directly absorbed from the stomach into the blood. Hence, the effects of alcohol can be felt even without digestion.
Digestion is the process of breakdown of food inside the living organism's body. This is essential to release energy from the food, necessary to complete all the processes of the body. The digestion begins from the mouth itself.
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In living organisms, almost all chemical reactions are catalyzed by protein catalysts called:_____.
Nearly all chemical reactions in living things are accelerated by proteins called: Enzymes
Enzymes
The human body is made up of various cell types, tissues, and other intricate organs. The biological processes of breathing, digestion, excretion, and a few other metabolic activities are accelerated by chemicals that our body produces for effective functioning in order to maintain a healthy life. Enzymes are therefore essential to all living things and control all biological activities.
A protein catalyzes a reaction in what way?
Enzymes, however, are another type of catalyst that can be found in nature. Proteins known as enzymes have the ability to reduce the activation energy for a variety of biological events. They accomplish this by attaching the reactant(s), also referred to as the substrate(s), to an enzyme active site.
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Which term refers to the breakdown of glucose in human muscle cells when oxygen is insufficient due to muscle fatigue?
Anaerobic Glycolysis term refers to the breakdown of glucose in human muscle cells when oxygen is insufficient due to muscle fatigue.
The typical pathway of glycolysis is redirected through anaerobic glycolysis to yield lactate. It happens when there is a need for energy without oxygen. It is essential for tissues with high energy needs, low oxygen levels, or those lacking oxidative enzymes. Pyruvate is designated as the pathway's end product under aerobic settings, while lactate is the end result under anaerobic ones. Pyruvate is converted to lactate in anaerobic conditions by anaerobic glycolysis. The production of two ATP molecules occurs during anaerobic respiration. The enzymes that drive glycolysis are unable to function in an acidic environment, thus if a muscle cell becomes excessively acidic, the muscle stops working. Pyruvate and H+, two byproducts of anaerobic glycolysis, are produced during intense exercise.
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The human heart is an organ that is made up of cells. not all of the cells that make up the heart are identical, however. what name is given to a group of similar cells that perform a special function and together make up an organ? question 1 options: embryo system tissue organelle
The correct option is (c) Tissue
A collection of cells with similar structures and functions is referred to as a tissue.
What is Tissue?A collection of cells with similar structures and functions is referred to as a tissue. Histology is the study of tissue. The intercellular matrix, a nonliving substance, fills the spaces between the cells. There might be a lot of this in some tissues and not much in others. A particular tissue may have special components in its intercellular matrix, such as fibers and salts, that are specific to that tissue and give it specialized properties. The body is made up of four different types of tissue: epithelial, connective, muscular, and nervous. Each has a purpose for which it was created.Learn more about the Tissues with the help of the given link:
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The orthopedic surgeon informs you that you have broken the distal region of the humerus. what area is he describing?
The orthopedic surgeon describes about the epiphysis when informing about the broken distal region of the humerus.
Epiphysis is the extended long part of the bones. It is primarily responsible for the articulation. It is also called the second ossification center. The bones that contain an epiphysis are: humerus, radius, ulna, femur, fibula, etc. There are four types of epiphysis in human body: Pressure epiphysis, Traction epiphysis, Atavistic epiphysis and Aberrant epiphysis.
Humerus is the largest bone of the upper portion of the body. It is present in the upper arm region. It is attached to the scapula of the shoulder and the elbow region, with the radius-ulna bone. Many important muscles of the body are attached to the humerus.
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In the periphery of the body, ____ build the myelin sheaths that surround and insulate certain vertebrate axons.
In the periphery of the body, Schwann Cells build the myelin sheaths that surround and insulate certain vertebrate axons.
What is Schwann Cells?The primary glial cell type in the peripheral nervous system is known as a Schwann cell (SC). In the growth, upkeep, operation, and regeneration of peripheral nerves, they play crucial roles. SCs can be divided into two main types in the mature nervous system: myelinating cells and non-myelinating cells. All large-diameter peripheral axons are myelin-ensheathed by myelinating SCs. A single axon is associated with each myelinating SC. Smaller axons are linked to nonmyelin-forming SCs in a way that allows them to wrap around several axons to generate Remak bundles. In this article, the morphological traits of SCs are discussed along with how they impact peripheral nerve architecture.
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How could the loss of biodiversity affect humans?
The loss of biodiversity could affect humans by leading to the loss of potential medicine, foods and products and is therefore denoted as option B.
What is Biodiversity?This refers to the variations which exists between organisms which are present in different types of ecosystem.
Lack of variation means there will be shortage of organisms which have differences in their traits or features. This isn't ideal because these differences may be as a result of natural selection which makes them fitter therefore having more beneficial properties.
These are therefore the most appropriate ways in which the loss of biodiversity affect humans.
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The first primitive hemopoietic stem cells develop in the ____________ wall of the embryo by the ____________ week of development.
By the third week of development, the embryo's endothelial wall/Yolk sac is home to the first primitive hemopoietic stem cells.
It occurs in the yolk sac, liver, and bone marrow.
takes place in the bone marrow of adults.Which cell types do HSCs split into?
The typical myeloid progenitor; the common lymphoid progenitor.Hematopoietic stem cell characteristics
capable of renewalmay transform into a wide range of specialized cellsemerges from bone marrow into the bloodstream.are capable of programmed cell killing (apoptosis).In culture, resemble and behave like regular white blood cells.
A stem cell makes up about 1 in 10,000–15,000 bone marrow cells (1 in 100,000 in the blood stream).Learn more about Endothelial wall
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