BIOLOGY HIGH SCHOOL

You have examined several body systems that rely and work with each other in order function properly. One very important task that amphibians and all living things need is to efficiently exchange gases in order to survive. Explain in a brief essay how the cardiovascular system and respiratory system work with each other based on your experience and observations from this virtual lab.

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Answer 1
Answer: The task of the respiratory system is the exchange of Oxygen and Carbon Dioxide within the body; however, the respiratory system alone has no mechanism for the transfer of oxygen from the lungs to the body for absorption and transfer of carbon dioxide from the body for expulsion. The cardiovascular system assists in this by moving oxygen-saturated blood from the lungs to different parts of the body and carbon dioxide rich blood from the body to the lungs.

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The best explanation for all these offspring being female is that

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The male had both Y chromosomes

Andrew accidentally touches a very hot pan on the stove, and he automatically withdraws his hand. which part(s) of the central nervous system is(are) involved in this automatic response?

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The spinal cord

The spinal cord part of the central nervous system is involved in this automatic response.

The spinal cord is a long, tiny tube of nervous tissue that support cells which passes from the end of the brainstem to the bottom of the spine. The central brain nervous system is made up of the spinal cord and the brain. The spinal cord is the center for coordinating many reflexes and it plays major roles in the transmission of nerve signals (messages) between the brain and the rest of the body.

Which part of the root allows it to grow deep inside the soil in search of water?

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The correct answer is root tip. The root tip is the part of the root that allows it to grow deep into the soil in search of water. The gravity is the force that allows the root tip to keep pushing in order for it to grow inside the soil.

Of the following which is most likely to result after a farmer sprays his crops with pesticides

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You forgot the options, but here are some options, maybe you meant those?
1.The crops die.
No, this is not likely. good pesticides don't kill the crops

2.The insect population increases.
No - rather it will decrease

3. The soil dries up and blows away.
Again, not unless the pestiide is really bad

4.A neighbor’s well tests positive for pesticides.
yes, this is what is likely to happen

Yes, the well would test positive for pesticides.

List in the order the major blood vessels, chambers, and valves through which a drop of blood must pass in traveling from a vena cava

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Deoxygenated blood flows from the vena cava, into the right atrium, it's then pumped through the atrio-ventricular valves and into the right ventricles. It is then pumped from the right ventricles through the semi-lunar valves to the pulmonary artery where deoxygenated blood is carried to the lungs

Which of the following describes a negative Feedback loop? A) When the heart rate is too high the body since hormones that continually increase the heart rate higher B)When a pregnant woman is a labor in the body since hormones that increase the intensity of contractions which then increases the secretion of the same hormones C)When blood sugar is too low the body since hormones that raise blood sugar until it reaches a typical level and hormone secretion slows D)When a person is jogging the body since four months to continually do you kris the rate of oxygen supply to the legs

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Answer:

its c : When blood sugar concentration is above normal, the endocrine system releases hormones that lower the blood sugar concentration until it reaches a normal level, and the release of the hormones slows.

Explanation:

A) Positive feedback loop

B) Positive feedback loop

C) Negative feeback loop
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