Pretest-Feedback mechanism

:   1. What is the primary function of negative feedback loops in biological systems?

• A) Amplify the initial stimulus

• Maintain stability and homeostasis

• Trigger exaggerated responses

• Enhance variability in internal conditions

Question 2:    How do feedback mechanisms help organisms respond to changes in their environment?

• A) By amplifying the effects of stimuli
  B) By maintaining internal stability

• B) By maintaining internal stability

• C) By inhibiting all physiological processes

• D) By decreasing variability in responses

Which of the following is an example of a feedback mechanism involved in regulating body temperature?

 

• A) Insulin secretion in response to high blood sugar levels

• B) Release of adrenaline during stress

• C) Activation of sweat glands in response to high temperature

• D) Vasodilation in response to low oxygen levels

Which organ is primarily responsible for regulating blood glucose levels through feedback mechanisms?

• A) Liver

• B) Kidneys
  

• C) Pancreas

• D) Heart

5:   In response to a drop in blood pressure, which feedback mechanism is typically activated to restore blood pressure to normal levels?

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• A) Release of more red blood cells

• B) Activation of the sympathetic nervous system

• C) Inhibition of the renin-angiotensin-aldosterone system

• D) Decreased heart rate