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10 Qs

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Biology

University

Practice Problem

Hard

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Allwyn S

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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following statements is true about the passage of blood through the body and lungs?

Blood flows from the heart to the lungs through the pulmonary artery and returns to the heart through the pulmonary vein.
Blood flows from the lungs to the heart through the pulmonary vein.
Blood flows from the heart to the lungs through the pulmonary vein.
Blood flows from the lungs to the heart through the pulmonary artery.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the primary function of the kidneys in the passage of blood?

The kidneys only reabsorb water and ions from the filtered plasma.

The kidneys remove carbon dioxide from the blood.

Filter waste and excess substances, regulate blood pressure, maintain electrolyte balance

Transport oxygen to cells

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is an example of positive feedback in the human body?

Release of cortisol during stress

Regulation of body temperature

Release of adrenaline during rest

Release of oxytocin during childbirth

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following scenarios best illustrates the concept of negative feedback in the body's control systems?

The body's adjustment to bright light by dilating the pupils
The body's response to high temperature by sweating to cool down and then stopping sweat production once the temperature is regulated.

Low blood sugar levels result in decreased insulin production, further lowering blood sugar levels.

The body's response to low blood sugar by releasing more insulin

5.

MULTIPLE SELECT QUESTION

1 min • 1 pt

What is the primary function of the blood passing through the walls of the gastrointestinal tract?

To absorb dissolved carbohydrates, fatty acids, and amino acids, from ingested food

Regulate body temperature
Produce enzymes
Absorb nutrients

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the primary reason for the continual exchange of extracellular fluid between the plasma and the interstitial fluid as blood passes through the capillaries?

To increase the blood pressure within capillaries

Capillary permeability

To maintain homogeneity of extracellular fluid throughout the body

To prevent plasma proteins from entering the interstitial fluid

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What triggers the baroreceptor system to act in regulating arterial blood pressure?

Stretch of the venous wall

Activation of the sympathetic nervous system
Increase in arterial blood pressure
Decrease in arterial blood pressure

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