Answer:
it verifies that the early universe was once extremely hot.
Answer:
it verifies that the early universe was once extremely hot.
Explanation:
the only way to tell if the red blood cells are crenated is to
Answer:
is to go for medical check-up
Explanation:
it's through the medical checkup
you will know that it still crenated
The only way to tell if the red blood cells are crenated is to observe them under a microscope
What is crenation?Crenation is the process of red blood cells becoming misshapen and breaking apart, and this can be seen through the examination of red blood cells under a microscope.
By observing the shape of the red blood cells, it can be determined if they are crenated or not. Additionally, other methods such as hemoglobin analysis or measuring the osmotic fragility of the red blood cells can also be used to determine if crenation has occurred.
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1. Write true or false for the following statements. Also rewrite the false statements correctly
A) Stomata in the leaves open and close with the help of guard cells
Answer:
TrueExplanation:
Make me as brain liest
Design a controlled experiment to determine the effect of hot, dry air on head lice. In your experimental design, be sure to:
• state the hypothesis to be tested in the experiment [1]
• state one way the control group will be treated differently from the experimental group [1]
• state one result of the experiment that would support the hypothesis [1]
An experiment is carried out to answer a question. The hypothesis predicts what is expected to occur. Experimental and control groups are compared to analyze the results, supporting or not the hypothesis.
-----------------------------------------
BACKGROUND
When people are infested with head lice, it is recommended to wash their cloth and dry it with hot air over 53 or 54ºC for 5-30 minutes.
Head lice and eggs seem to die when exposed to those conditions by getting dehydrated.
SITUATION
We will assume that we work in a primary school and that students from the 3rth grade are being affected by this parasite.
We want to know if applying hot air to these students before entering the class will make a difference and help to control this problem.
So, we will propose an experiment to answer this question.
HYPOTHESIS
A hypothesis is a conjecture. A researcher hypothesizes to predict what is going on or what is expected to occur. The hypothesis is a claim of how it works a relation between two or more variables. Usually, it is written in the present time.
Hypothesis ⇒ Applying hot air to students' heads kills the head lice that students are carrying.
To evaluate the effect of hot air, we need to keep control of as many other variables as possible.
To do so, we asked students' families not to use other treatments on students' heads and to bathe them daily.
In this way, we were sure that all students
were equally affected by the parasite, took showers every day, and neither was using any other product that could affect the results.Our population was the 3rth grade students ⇒ 64 children ⇒ 30 girls + 34 boys.
Before the experiment, we separated the 3rth grade into two groups.
Group A ⇒ 32 students ⇒ 15 girls + 17 boys ⇒ Experimental groupGroup B ⇒ 32 students ⇒ 15 girls + 17 boys ⇒ Control group
→ Treatment
Each student from group A received hot air every day for one week before entering the class.
Hot air was 53ºC and was applied for 5 minutes.
→ Control
Each student from group B did not receive the treatment for one week before entering the class.
CONTROL GROUP
The control group is used to identify any other factors influencing the results obtained in the study, apart from the modified variables of the treatment.
Individuals of the control group are selected from the same population as the treatment group.
*** These two groups are identical in all aspects except for the independent variable, which changes in the treatment group but remains constant in the control group. ***
The control group is Group B. The only difference between the control and the experimental group is that the first one did not receive the treatment. Every other aspect was equal for both groups.
The only way the control group was treated differently from the experimental group was that the control group did not received the treatment, while the experimental group did.
RESULTS
After one week, groups were compared to see if the hot air was effective in killing head lice.
When comparing the control and the experimental group, we could see that students from group A were free of parasites.
Students from group B were still affected by the head lice.
CONCLUSION
The results support the hypothesis. Hot air turned to be a great treatment for lice control.
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helpppppppppppppppppp
Answer:
its osmosis
Explanation:
Active transport is the energy consuming process that involves the movt of molecules from their region of low concentration to a region of high concentration.
Diffusion is the net movt of molecules or ions from a region of their higher concentration to a region of their lower concentration.
Facilitated diffusion is the transport of molecules and ions across a membrane by specific transport proteins,carriers and channel proteins found within the membrane in the direction of lower concentration down a concentration gradient.
Osmosis is the net movement of water molecules from a region of their high concentration to the region of their lower concentration through a partially permeable membrane. OR this is the passive movement of water molecules across a partially permeable membrane from a region of lower solute concentration to a region of higher solute concentration.
Answer:
ayo its me imthetarget hows it going
Explanation:
what type of cell are fungi animals plants and protists made of
Answer:
eukaryotic cells
Explanation:
All cells fall into one of these two broad categories. Only the single-celled organisms of the domains Bacteria and Archaea are classified as prokaryotes—pro means before and kary means nucleus. Animals, plants, fungi, and protists are all eukaryotes—eu means true—and are made up of eukaryotic cells.
Arrhythmia can cause the heart to beat in which of the following ways?
*d. all of the above
Answer:
d
Explanation:
what is the difference between the thermosphere and stratosphere
Answer:
Explanation:
The stratosphere starts just above the troposphere and extends to 50 kilometers (31 miles) high. The ozone layer, which absorbs and scatters the solar ultraviolet radiation, is in this layer. The thermosphere starts just above the mesosphere and extends to 600 kilometers (372 miles) high
Answer:The stratosphere starts just above the troposphere and extends to 50 kilometers (31 miles) high. The ozone layer, which absorbs and scatters the solar ultraviolet radiation, is in this layer. The thermosphere starts just above the mesosphere and extends to 600 kilometers (372 miles) high
Explanation:
1. a) Students are trying to decide which is better for the environment: glass bottles or aluminum cans. They intend to use a formal method of investigation to determine which container is better. They are going to make a list of pros and cons for using each type of container but first need to do some research. The students need to find out things like how much matter and energy are used to make the bottles and cans.
b) How do you know the students in the above study are acting as scientists? (1 point)
Answer:
because they are helping the envioment and developing experiments
Explanation:
what part of the skin contains blood vessels that help regulate body temperature
Answer: Dermis
Explanation: The blood vessels of the dermis provide nutrients to the skin and help regulate body temperature.
A species of snake has evolved resistance to a poisonous newt allowing the snakes to prey on the newts. The newts have become more poisonous over time, as a result, leading to a kind of evolutionary arms race. This is an example of ____.
coevolution
mimicry
environmental resistance
commensalism
ecological succession
The newts have become more poisonous over time, as a result, leading to a kind of evolutionary arms race. This is an example of coevolution.
Coevolution is the process of evolutionary change that occurs between pairs or group of species as they interact with one another.
The predator-prey relationship is the most common type of coevolution. This involves the prey evolving so as to avoid capture and thus leading to the evolution of the predator so as to become more effective hunters.
Predator-prey coevolution is a kind of evolutionary arms race.
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where does the energy start and where does it end
Answer:
Our energy supply comes mainly from fossil fuels, with nuclear power and renewable sources rounding out the mix. These sources originate mostly in our local star, the Sun.
That light energy will be absorbed and converted to heat. Then it will radiate out into space as infrared thermal radiation. It will travel in that form for a long time, once it gets out of the Earth's atmosphere.
Explanation:
Hope it helps
Answer:
You did not really specify your question but I am guessing it is talking about the food chain and the food chain starts at the plants and ends at the predator who does not have a predator.
Explanation:
QUESTION: While some bacteria are pathogenic (disease-causing), others have beneficial effects on humans. Describe one way in which bacteria are helpful in our day-to-day lives, indicating how their presence is important.
ANSWER:
HELP ME PLEASEE
tell me what to write in the answer box
Answer:
See below (you have multiple answers to choose from)
Explanation:
-Bacteria helps degrade the food we eat
-They help trees grow
-They are also used in biotechnology applications to produce everything from food to energy to clean water.
- They are important in the recycling of nutrients in the environment
Answer:
One way in which bacteria are helpful in our day-to-day lives is the bacteria present in our stomachs which help us digest certain types of food and some chemical compounds inside of some food items. Without these bacteria, some compounds in food would not be able to be broken down and would in turn either poison or harm us in some way.
Explanation:
What foods contain saturated fats in general?
Answer:
cheese,bacon,sausages,biscuits,cakes.
Answer: Triple bacon cheeseburger
Explanation:
The volume (V) of a cylinder can be determined by using the formula
V = ar?h,
where r = the radius of the base, and h = the height of the cylinder. What is the result
of solving this equation for r?
Answer:
Explanation:
To solve for r, simply means to isolate the variable:
[tex]V = pi*r^2*h\\[/tex]
The inverse of multiplication is division, so divide both sides by pi and h
[tex]\frac{V}{pi*h} = r^2[/tex]
[tex]r = \sqrt\frac{V}{pi*h}[/tex]
Why are food chains limited in how long they can be?
plss help
Answer:
Energy is transferred between trophic levels when one organism eats another and gets the energy-rich molecules from its prey's body. However, these transfers are inefficient, and this inefficiency limits the length of food chains.
Somebody help me please
Which of the following is hypothesis
A.if plant receives more water then it will grow taller.
B. What happens if a plant receives a lot of water
C. Plants need water to grow
Answer:
A
Explanation:
Hypothesis Is an educated guess. So, your educated guess is that if you water the plant, the plant will grow taller.
10. If an A (adenine) is exchanged for a C (cytosine) in a gene, it is a:
Answer:
Explanation:
A mutation occurs, and cytosine is replaced with adenine. ... (Figure) Adenine is larger than cytosine and will not be able to base pair properly with the guanine on the opposing strand. This will cause the DNA to bulge.
Compound X is used as an energy source in respiration.
Suggest the name of compound X.
Answer:
Glucose
Explanation:
After reading the overview of cellular respiration, the primary or initial fuel of respiration should be clear - it's glucose, which is the molecule of sugar that plants create for animals (as well as the plant itself) to utilize as an energy source.
Hope this helps!! Brainliest?? Anyways have a great day!!
help me with these questions
Answer:
1. land
2. crops
3. lack
4. Plants, people
Hope it helps.
In single celled organisms what are the materials primarily stored in?
Answer:
In single-celled organisms, materials are stored primarily in. ribosomes.
Mistletoe is a plant that lives on the branches of trees. The mistletoe plant sends its roots in through the bark of trees and takes away water and minerals that the tree needs.
Explanation:
An undersea volcano erupts, creating a new island in the Gulf of Mexico. Life slowly starts to appear on the island. What would probably be the first species to take hold and survive? Pls, explain your answer.
A. ferns C. lichens
b. finches d. grasses
Answer:
Lichens
Explanation:
Lichens are very mere grasses
They need very less oxygen
They can adopt in any situation just they need drops of water .
So they will start to hold and survive at first
drag each micrograph to the target that indicates the stage of mitosis or cytokinesis it shows.
Mitosis occurs after the interphase and involves four stages. After mitosis event occurs cytokinesis. The correct order is 1A, 2F, 3E, 4B, 5C, 6D.
------------------------------------------
Mitosis is a process by which, from a diploid somatic cell (2n), two daughter diploid cells (2n) are produced.
First occurs duplication of the cell content, and then the separation into two new cells happens.
Mitosis occurs in only one phase.
• In the prophase, it occurs chromosomes condensation and nuclear membrane breaks.
• During the metaphase, chromosomes are taken toward the center of the cell by the spindle apparatus. Once in the equatorial plane, chromosomes line up.
Each chromatid joins with a microtubule of opposites poles.
• In Anaphase, bonds between chromatids break. They separate and migrate to the opposite poles.
• In telophase, duplicated chromosomes are already in the corresponding poles, and the nuclear membrane forms again in each pole.
• Finally, cytokinesis occurs. Through invagination of the cell membrane, the cells and their cytoplasmatic content get separated.
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explain what happen during the process of birth
referred to the following terms in your exlanation
gestation period
role of oxytocin
after birth
caesarean
colostrum
Answer: ok so the prosses of birth is kinda a science question and will be a hard answer. so it starts how it does and the sperm meets the egg and the baby starts to grow from there
Explanation:
which activity results from the action of hydrochloric acid on protein in the stomach?
Answer:
Hydrochloric acid contributes to protein digestion by supplying H+ which activates pepsinogen, the precursor to pepsin. Pepsinogen is secreted by chief cells in the gastric glands of the body and antrum of the stomach
I hope this will be helpful
Activation of pepsin results from the action of HCl. Pepsin is important for the digestion of proteins. Thus, partial digestion of proteins happens in stomach.
What are the functions of stomach?Stomach has an important role in the digestion of food. It is regarded as organ for temporary food storage.
Stomach contains various digestive enzymes, gastric juice and hydrochloric acid that prepares the food for complete digestion in the duodenum.
The walls of the stomach secrete hydrochloric acid which is responsible for imparting acidity to food. It is also important for killing of any bacteria present in the food. The acidic pH activates the enzyme pepsin which is required for the digestion of proteins into peptones.
Stomach also contains the gastric juice which kills any microbes present in the food. It is also important for nutrient absorption. Stomach also contains enzyme lipase to favour partial digestion of lipids.
Thus, stomach is important for the partial digestion of proteins and lipids.
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which component of dna are held together by weak hydrogen bonds?
Answer:
the paired bases( nitrogenous bases )
usain bolt, a world champion sprinter, can run a 10-meter split in 0.82 seconds. say you obtain a quadriceps muscle sample from usain bolt and compare it to one from a 25-year-old male long-distance runner. what differences do you expect to observe between those two muscle samples? select all that apply.
A quadriceps muscle sample from Usain Bolt and compared it to one from a 25-year-old male long-distance runner, and it is seen that there are more fast-twitch fibers and red and white muscle fibers of larger cross-sectional area in Usain Bolt's leg muscles.
What is the distinction between fast-twitch and slow-twitch muscles?Athletes who run fast, such as sprinters, have more fast-twitch muscle, which is called "white muscle," as they need more energy for a short period of time, and as a result, the muscles anaerobically respire. The slow twitch muscle, called "red muscle," is more commonly seen in the long distance runner, such as in the marathon, and these runners need a continuous supply of energy for a long time, so aerobically the muscle respires.
Hence, a quadriceps muscle sample from Usain Bolt was compared to one from a 25-year-old male long-distance runner, and it was seen that there are more fast-twitch muscle fibers and red and white muscle fibers with a larger cross-sectional area in Usain Bolt's leg muscles.
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The question is incomplete; the complete question is below.
usain bolt, a world champion sprinter, can run a 10-meter split in 0.82 seconds. say you obtain a quadriceps muscle sample from usain bolt and compare it to one from a 25-year-old male long-distance runner. what differences do you expect to observe between those two muscle samples? select all that apply.
more fast-twitch fibers in Usain Bolt's leg muscles
more mitochondria in Usain Bolt's leg muscles
red and white muscle fibers of larger cross-sectional area in Usain Bolt's leg muscles
which region of the brain is larger in humans and primates than in other vertebrates?
Why is water described as a polar molecule ?
Answer:
It is described as a polar molecule because of an unequal sharing or electrons, causing the molecule to have a more bent shape.
Explanation:
Electrons are attracted a bit more to the oxygen and spend more time with them than the hydrogen.
Is this poison sumac?
Answer:
Definitely not
Explanation:
Usually they have clusters of small green or white berries on them, as well as smaller, glossier looking leaves.
