Cellular Homeostasis Quiz

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How is homeostasis maintained in cells?

Through positive feedback loops

By increasing environmental changes

Through negative feedback loops (correct)

By shutting down all cellular processes

What happens when the body temperature of humans goes above the homeostatic level?

Sweating and dilation of blood vessels in extremities occur (correct)

The body temperature continues to rise indefinitely

The body stops all cooling mechanisms

Shivering and constriction of blood vessels occur

What triggers the pancreas to release insulin in animals?

Elevated body temperature

Falling blood glucose levels

Rising blood glucose levels (correct)

Increased blood pressure

What is the optimal body temperature for humans?

98.6 degrees Fahrenheit Signup and view all the answers

Which of the following is NOT an example of homeostasis?

Glucose levels rising after food ingestion Signup and view all the answers

What is the main organelle responsible for maintaining homeostasis?

Cell membrane Signup and view all the answers

What is the process of water moving from a high concentration of water to a low concentration of water called?

Osmosis Signup and view all the answers

What helps regulate how much water moves into and out of the cell?

Aquaporins Signup and view all the answers

What does the cell use to pump sodium ions outside the cell and potassium ions into the cell?

Active transport Signup and view all the answers

What regulates ion channels in the cell membrane, allowing for finer levels of control?

Ligands or other stimuli Signup and view all the answers

Cellular Homeostasis Quiz

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Questions and Answers

How is homeostasis maintained in cells?

What happens when the body temperature of humans goes above the homeostatic level?

What triggers the pancreas to release insulin in animals?

What is the optimal body temperature for humans?

Which of the following is NOT an example of homeostasis?

What is the main organelle responsible for maintaining homeostasis?

What is the process of water moving from a high concentration of water to a low concentration of water called?

What helps regulate how much water moves into and out of the cell?

What does the cell use to pump sodium ions outside the cell and potassium ions into the cell?

What regulates ion channels in the cell membrane, allowing for finer levels of control?

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