Unit 4 questions for MT Studyguide

What is the primary function of sweating in the human body?

• To increase body temperature

• To cool down the body

• To provide energy

• To protect against UV rays

Which of the following best describes the process of shivering?

• It is a voluntary action to increase body temperature.

• It is an involuntary response to decrease body temperature.

• It is an involuntary response to increase body temperature.

• It is a voluntary action to decrease body temperature.

Explain how active transport differs from passive transport in cells.

• Active transport requires energy, while passive transport does not.

• Both active and passive transport require energy.

• Passive transport requires energy, while active transport does not.

• Neither active nor passive transport requires energy.

Which of the following is an example of passive transport?

• Endocytosis

• Exocytosis

• Osmosis

• Sodium-potassium pump

How does the human body maintain homeostasis when exposed to a cold environment?

• By increasing blood flow to the skin

• By decreasing metabolic rate

• By shivering to generate heat

• By sweating to release heat

Describe the cellular response when placed in a hypotonic solution.

• Cells shrink due to water loss.

• Cells swell and may burst due to water intake.

• Cells remain unchanged.

• Cells actively transport water out.

What happens to a cell in a hypertonic solution?

• It gains water and swells.

• It loses water and shrinks.

• It remains the same size.

• It bursts due to excess water.

In an isotonic solution, how do cells maintain their shape?

• By actively transporting water in and out

• By allowing equal movement of water in and out

• By only allowing water to move out

• By only allowing water to move in

Analyze how active transport contributes to maintaining homeostasis in cells.

• It allows cells to passively balance ion concentrations.

• It enables cells to move substances against their concentration gradient.

• It prevents any movement of substances across the cell membrane.

• It only allows water to move across the cell membrane.

Evaluate the role of feedback mechanisms in maintaining homeostasis during exercise.

• Feedback mechanisms are not involved during exercise.

• They help maintain a constant body temperature and energy levels.

• They only function to increase body temperature.

• They only function to decrease body temperature.