Explore Homeostasis and Feedback Mechanisms

Which of the following is an example of a negative feedback mechanism?

• Blood clotting

• Childbirth contractions

• Regulation of blood glucose levels

• Fever

Tags

NGSS.HS-LS1-3

What is the role of insulin in the body?

• To increase blood sugar levels

• To decrease blood sugar levels

• To regulate body temperature

• To promote digestion

Tags

NGSS.HS-LS1-3

How does the body respond to a decrease in body temperature?

• By sweating

• By shivering

• By increasing heart rate

• By dilating blood vessels

Tags

NGSS.HS-LS1-3

Which of the following processes is an example of a feedback mechanism maintaining homeostasis?

• Photosynthesis

• Cellular respiration

• Thermoregulation

• Protein synthesis

Tags

NGSS.HS-LS1-3

How does the body maintain homeostasis when blood glucose levels rise after eating?

• By releasing glucagon

• By releasing insulin

• By increasing heart rate

• By decreasing body temperature

Tags

NGSS.HS-LS1-3

Which of the following best describes the role of feedback mechanisms in homeostasis?

• They amplify changes in the body

• They stabilize internal conditions

• They disrupt normal body functions

• They prevent any changes in the body

Tags

NGSS.HS-LS1-3

Explain how the body uses feedback mechanisms to regulate blood pressure.

• By increasing heart rate when blood pressure is low

• By decreasing heart rate when blood pressure is high

• By releasing hormones that constrict or dilate blood vessels

• All of the above

Tags

NGSS.HS-LS1-3

Analyze how the failure of feedback mechanisms can lead to disease.

• It can cause the body to overheat

• It can result in uncontrolled blood sugar levels

• It can lead to dehydration

• It can cause muscle fatigue

Tags

NGSS.HS-LS1-3

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

• They are ineffective because they cannot keep up with rapid changes

• They are effective because they adjust heart rate and breathing

• They are ineffective because they only work at rest

• They are effective because they prevent any changes in the body

Tags

NGSS.HS-LS1-3

Design an experiment to test the effect of temperature on enzyme activity as a feedback mechanism.

• Measure enzyme activity at different pH levels

• Measure enzyme activity at different temperatures

• Measure enzyme activity with different substrates

• Measure enzyme activity with different enzyme concentrations

Tags

NGSS.HS-LS1-3