Homeostasis questions

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Homeostasis question collection

Review Homeostasis questions for Biology, with correct answers shown and coverage across nervous coordination; hormonal control; blood glucose regulation.

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Question 1

What is homeostasis?
  1. Maintaining internal conditions near optimum levels
  2. Keeping the external environment stable
  3. Increasing every cellular reaction rate
  4. Controlling which characteristics are inherited

Question 2

Which internal condition is controlled by homeostasis?
  1. Body temperature
  2. Eye colour
  3. Number of chromosomes
  4. Blood group

Question 3

In control systems, what do receptors detect?
  1. Stimuli
  2. Responses
  3. Hormones
  4. Enzymes in target cells

Question 4

Which part of the brain regulates body temperature and water balance?
  1. Hypothalamus
  2. Cerebellum
  3. Medulla
  4. Pituitary gland

Question 5

What is the role of insulin?
  1. To lower blood glucose concentration
  2. To raise blood glucose concentration
  3. To break down glycogen to glucose
  4. To increase urine production

Question 6

What is the role of glucagon?
  1. To raise blood glucose concentration
  2. To lower blood glucose concentration
  3. To convert glucose into glycogen
  4. To increase sweating

Question 7

Type 1 diabetes occurs when the pancreas does what?
  1. Produces little or no insulin
  2. Produces too much insulin
  3. Stops producing glucagon
  4. Cannot digest starch

Question 8

What change is linked to type 2 diabetes?
  1. Body cells respond less to insulin
  2. The pancreas produces little or no insulin
  3. Body cells respond more strongly to insulin
  4. The kidneys stop responding to ADH

Question 9

Which change can reduce the risk of type 2 diabetes?
  1. Regular exercise and a balanced diet
  2. Less activity and more sugary foods
  3. Routine antibiotics with every meal
  4. More saturated fat and less fibre

Question 10

How do skin blood vessels respond when body temperature is too high?
  1. Dilate and carry more blood
  2. Constrict and carry less blood
  3. Constrict and carry more blood
  4. Dilate and carry less blood

Question 11

How does shivering warm the body?
  1. Rapid muscle contractions release thermal energy
  2. Sweat evaporation releases thermal energy
  3. Skin vessels dilate and reduce heat loss
  4. Muscles stop respiring to conserve energy

Question 12

Why does sweating cool the body?
  1. Evaporation transfers energy from the skin
  2. Condensation transfers energy from the skin
  3. Sweat forms an insulating layer over the skin
  4. Sweat reduces blood flow through skin vessels

Question 13

Which hormone controls water reabsorption in the kidneys?
  1. ADH
  2. Insulin
  3. Glucagon
  4. Thyroxine

Question 14

What happens to ADH release when blood water concentration is low?
  1. It increases
  2. It decreases
  3. It stays unchanged
  4. It changes to insulin release

Question 15

What is urine like when ADH level is high?
  1. Low volume and concentrated
  2. High volume and dilute
  3. Low volume and dilute
  4. High volume and concentrated

Question 16

Which pair describes kidney functions?
  1. Balance water and ions; remove urea
  2. Control blood glucose; make insulin
  3. Exchange gases; remove carbon dioxide
  4. Digest food; absorb soluble nutrients

Question 17

What is urea produced from in the liver?
  1. Excess amino acids
  2. Excess glucose
  3. Excess fatty acids
  4. Excess oxygen

Question 18

What is dialysis used to do?
  1. Remove urea and balance water and ions
  2. Replace insulin and control blood glucose
  3. Destroy pathogens and produce antibodies
  4. Digest fats and absorb fatty acids

Question 19

Why can a kidney transplant be preferable to long-term dialysis?
  1. It can restore continuous kidney function
  2. It filters blood during scheduled machine sessions
  3. It avoids the need for immunosuppressant drugs
  4. It uses the patient's damaged kidneys for filtration

Question 20

What does negative feedback do?
  1. Reverses a deviation from the normal level
  2. Amplifies a deviation from the normal level
  3. Keeps the response fixed as conditions change
  4. Moves the controlled level farther from optimum

Question 21

What processes receptor information in a control system?
  1. Coordination centre
  2. Effector
  3. Stimulus
  4. Target cell

Question 22

What carries out a response in homeostasis?
  1. Effector
  2. Receptor
  3. Stimulus
  4. Coordination centre

Question 23

What does insulin cause liver cells to do?
  1. Convert glucose into glycogen
  2. Convert glycogen into glucose
  3. Convert amino acids into urea
  4. Convert ADH into insulin

Question 24

What does glucagon cause liver cells to do?
  1. Convert glycogen into glucose
  2. Convert glucose into glycogen
  3. Convert amino acids into urea
  4. Convert insulin into ADH

Question 25

Which waste substance do the kidneys remove from the blood?
  1. Urea
  2. Carbon dioxide
  3. Oxygen
  4. Starch

Question 26

Which organ produces urea?
  1. Liver
  2. Kidney
  3. Pancreas
  4. Bladder

Question 27

What is a reflex action?
  1. A rapid automatic response to a stimulus
  2. A slow conscious response to a stimulus
  3. A rapid learned choice after deliberation
  4. A hormonal response carried in the blood

Question 28

How do signals travel in the nervous system?
  1. As electrical impulses along neurones
  2. As hormones dissolved in blood plasma
  3. As antibodies carried by lymph
  4. As urea dissolved in tissue fluid

Question 29

How does ADH increase water reabsorption?
  1. Makes collecting ducts more permeable to water
  2. Makes glomeruli less permeable to urea
  3. Makes bladder walls absorb more glucose
  4. Makes liver cells release more glycogen

Question 30

What does thyroxine help control?
  1. Metabolic rate
  2. Blood glucose concentration
  3. Kidney water reabsorption
  4. The menstrual cycle

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Review Homeostasis questions for Biology, with correct answers shown and coverage across nervous coordination; hormonal control; blood glucose regulation.

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