Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 1, Problem 22CTQ
You go for a long walk on a hot clay. Give an example of a way in which homeostasis keeps your body healthy.
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Which of the following is an example of homeostasis? Choose all answers that are correct as there may be more than one correct answer.
Show answer choices
The body shivering when outside in the cold.
The release of insulin after a meal to encourage your body to absorb the sugar from your blood, thus lowering your blood sugar.
Producing sweat when outside on a hot day that can evaporate into the air.
Breathing faster while exercising to add more oxygen to the blood and remove excess carbon dioxide from the blood.
Stretch receptors in your blood vessels detect when blood pressure is high and send signals to increase the diameter of your blood vessels and reduce the output from the heart to lower your blood pressure.
Which is/are example(s) of negative feedback?
Select ALL that apply
A. when your body gets too hot, the body starts to sweat, which helps cool you down
B. when a pathogen is detected, an immune cell releases cytokines, which signal other cells to release cytokines, increasing the total number released over time
C. when too much glucose builds up in the blood, insulin is released so that cells will absorb the glucose
D. when you have a cut, platelets activate and work to form a clot, which signals more and more platelets to activate and help form the clot
Positive feedback loops are the opposite of negative feedback loops. In a positive feedback loop, any change in the original variable triggers mechanisms that actually push the variable further in the direction of the change. Imagine that body temperature was regulated in this way. Briefly explain what would happen.
Chapter 1 Solutions
Biology 2e
Ch. 1 - Figure 1.6 In the example below, the scientific...Ch. 1 - Figure 1.7 Decide if each of the following is an...Ch. 1 - Figure 1.16 Which of the following statements is...Ch. 1 - The first forms of life on Earth were plants...Ch. 1 - A suggested and testable explanation for an event...Ch. 1 - Which of the following sciences is not considered...Ch. 1 - The type of logical thinking that uses related...Ch. 1 - The process of helps to ensure that a scientist’s...Ch. 1 - A person notices that her houseplants that are...Ch. 1 - The smallest unit of biological structure that...
Ch. 1 - Viruses are not considered living because they...Ch. 1 - The presence of a membrane-enclosed nucleus is a...Ch. 1 - A group of individuals of the same species living...Ch. 1 - Which of the following sequences represents the...Ch. 1 - Where in a phylogenetic tree would you expect to...Ch. 1 - Although the scientific method is used by most of...Ch. 1 - Give an example of how applied science has had a...Ch. 1 - Name two topics that are likely to be studied by...Ch. 1 - Thinking about the topic of cancer, write a basic...Ch. 1 - Select two items that biologists agree are...Ch. 1 - Consider the levels of organization of the...Ch. 1 - You go for a long walk on a hot clay. Give an...Ch. 1 - Using examples, explain how biology can be studied...
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Similar questions
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- If the oxygen level in the blood decreases, the brain sends a message to the lungs/diaphragm to breathe faster, which increases the levels of oxygen in the blood. This describes a negative or positive feedback loop.arrow_forwardIn the 2015 census, Albertans spent 30% of their budget on food purchased from restaurants. A lot of the food purchased is in the form of fast food. Fast food is often high in fat and sodium and low in nutrients and minerals such as calcium. Hypocalcemia, or low levels of calcium, may result in brittle nails, broken bones, muscle cramps, mental confusion, and seizures. Select the actions below that would help the body to maintain homeostasis if blood calcium levels are low. 1. Low levels of blood calcium are detected by thyroid gland. 2. Low levels of blood calcium are detected by parathyroid gland. 3. Parathyroid hormone is released. 4. Calcitonin is released. 5. Bone is broken down to release calcium. 6. Muscle is broken down to release calcium. 7. Calcium uptake by the kidneys and intestines increases. 8. Calcium uptake by the kidneys and intestines decreases. Record your answers in ascending (lowest to highest) order.arrow_forwardA fever is an increase in body temperature above the normal range. A fever causes metabolic changes that push the person’s body temperature still higher. If body temperature rises above 45°C death occurs because cellular proteins change shape and metabolism stops. Is a fever an example of a positive or negative feedback system? Explain your answer.arrow_forward
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- Your blood pressure begins to increase because you are waiting to interview for a new job. Your nervous system and your heart will work together and reduce your heart rate and dilate your blood vessels in response. This is an example of what type of feedback? Define homeostasis. asap please.arrow_forwardWhich of the following is an example positive feedback? contractions in childbirth blood glucose body temperature body fluid pHarrow_forwardz uousənO In terms of homeostasis, what is the most likely response to an increase in environmental temperature? Blood vessel constriction "Goosebump" formation Producing Sweat shivering and muscle contractionarrow_forward
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