GCSE Biology - Organism Level Systems - 3 - Exam Style Questions with Answers

Created on December 31, 2022 By

paruppts12

GCSE_OCR_GEN_BIO_3_ORGAN_3

1 / 10

What does ADH do?

ADH is secreted into the blood stream; increases the permeability of pancreas; decrease the reabsorption of water.

ADH is secreted into the veins; decrease the permeability of kidney; increases the reabsorption of water.

ADH is secreted into the veins; increases the permeability of liver ; decrease the reabsorption of water.

ADH is secreted into the blood stream; increases the permeability of kidney; increases the reabsorption of water.

2 / 10

Give 2 processes involving the skin which cools the body down

Shivering and vasodilation

Shivering and vasoconstriction

Sweating and vasodilation

sweating and vasoconstriction

3 / 10

State 3 conditions which need to be controlled within the body?

Temperature; oxygen levels; insulin levels

Blood pressure; water levels; blood glucose concentration.

Temperature; water levels; blood glucose concentration

Blood pressure; water levels; insulin levels

4 / 10

What does the secretion of glucagon cause?

Glycogen to be broken down into glucose to raise the blood glucose concentration

Glycogen to be broken down into fructose to raise the temperature

Glycogen to be broken down into sucrose to raise the pressure

5 / 10

Describe the process of vasodilation

More blood flows closer to the skin; more heat energy can be released; rise in temperature

More oxygen flows closer to the skin; more thermal energy can be released; decrease in temperature

More blood flows closer to the skin; more heat energy can be released; rise in temperature

6 / 10

Describe the negative feedback loop when dehydration is detected.

Thirst signals deactivated; more TSH released

Thirst signals deactivated; more ADH absorbed

Thirst signals activated; more ADH released

Thirst signals activated; less ADH absorbed

7 / 10

A

B

C

D

8 / 10

A

B

C

D

9 / 10

Define homeostasis.

The maintenance of a stable internal environment in the body despite fluctuations in internal and external conditions

The maintenance of a stable external environment in the body despite fluctuations in internal and external conditions

The maintenance of a unstable external environment in the body despite fluctuations in internal and external conditions

10 / 10

What happens if an animal cell is placed in a solution of lower water potential?

The cell will blow up

The blood cell will lyse

The cell will shrink

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