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Understanding Homeostasis and Feedback Mechanisms

Authored by Tammy Reynolds

Science

12th Grade

Understanding Homeostasis and Feedback Mechanisms
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is homeostasis?

The process of amplifying physiological changes

The maintenance of a constant internal environment within physiological tolerance limits

The tendency to disrupt internal equilibrium

The process of increasing blood glucose levels

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Blood clotting

Childbirth contractions

Regulation of blood glucose levels

Amplification of a stimulus

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What hormone is responsible for lowering blood glucose levels?

Glucagon

Adrenaline

Insulin

Thyroxin

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of diabetes is characterised by the destruction of beta cells?

Type 1 Diabetes

Type 2 Diabetes

Gestational Diabetes

Pre-diabetes

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of melatonin in circadian rhythms?

To increase heart rate

To regulate sleep patterns

To control blood glucose levels

To stimulate digestion

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a cooling mechanism in thermoregulation?

Vasoconstriction

Shivering

Piloerection

Sweating

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What triggers the release of adrenaline from the adrenal glands?

Low blood glucose levels

The amygdala sending stress signals to the hypothalamus

High melatonin levels

Low body temperature

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