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

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 10

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

Question 11

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 12

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 13

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

Question 14

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

Question 15

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 16

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 17

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

Question 18

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

Question 19

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 20

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 21

Which organ breaks down excess amino acids?
  1. The liver
  2. The kidneys
  3. The pancreas
  4. The small intestine

Question 22

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

Question 23

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 24

What does ADH make the collecting ducts?
  1. More permeable to water
  2. Less permeable to water
  3. More permeable to urea
  4. Less permeable to glucose

Question 25

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

Question 26

Which method of contraception is non-hormonal?
  1. A condom
  2. The contraceptive pill
  3. A hormone implant
  4. A hormone injection

Question 27

Which gland is often called the master gland?
  1. The pituitary
  2. The thyroid
  3. The pancreas
  4. The adrenal gland

Question 28

Which part of the eye changes shape to focus light?
  1. The lens
  2. The retina
  3. The cornea
  4. The iris

Question 29

During IVF, where does fertilisation happen?
  1. In a laboratory dish
  2. In the oviduct
  3. Inside the uterus
  4. Within the ovary

Question 30

Which plant hormone is used commercially as a weedkiller?
  1. Auxin
  2. Gibberellin
  3. Ethene
  4. Insulin

Question 31

What is the growth of a plant shoot towards light called?
  1. Phototropism
  2. Gravitropism
  3. Photosynthesis
  4. Transpiration

Question 32

Which hormone triggers the release of an egg in the menstrual cycle?
  1. LH
  2. FSH
  3. Oestrogen
  4. Progesterone

Question 33

Why is damage to the brain hard to treat?
  1. It is complex and delicate
  2. It has no blood supply
  3. It cannot be imaged
  4. It has no nerve cells

Question 34

Besides removing urea, what else do the kidneys control the balance of?
  1. Water and ions
  2. Oxygen and glucose
  3. Proteins and fats
  4. Hormones and enzymes

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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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