Cellular Respiration questions

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Cellular Respiration question collection

Review Cellular Respiration questions for Biology, with correct answers shown and coverage across aerobic respiration; anaerobic respiration; energy transfer in cells.

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Question 1

What is cellular respiration?
  1. Chemical reactions that release energy from glucose
  2. Ventilation that moves air through lungs
  3. Chemical reactions that make glucose using light
  4. Digestion that breaks food into small molecules

Question 2

In most cells, where does aerobic respiration mainly happen?
  1. Mitochondria
  2. Nucleus
  3. Ribosomes
  4. Cell wall

Question 3

Which word equation represents aerobic respiration?
  1. \(\text{Glucose} + \text{oxygen} \to \text{carbon dioxide} + \text{water}\)
  2. \(\text{Carbon dioxide} + \text{water} \to \text{glucose} + \text{oxygen}\)
  3. \(\text{Glucose} \to \text{ethanol} + \text{carbon dioxide}\)
  4. \(\text{Glucose} + \text{oxygen} \to \text{lactic acid}\)

Question 4

Which substance must be available for aerobic respiration?
  1. Oxygen
  2. Nitrogen
  3. Chlorophyll
  4. Starch

Question 5

Which substance is a product of aerobic respiration?
  1. Carbon dioxide
  2. Oxygen
  3. Glucose
  4. Lactic acid

Question 6

When do muscles use anaerobic respiration?
  1. When oxygen supply cannot meet demand
  2. When glucose supply cannot meet demand
  3. When oxygen supply exceeds demand
  4. When muscles need no energy

Question 7

What does anaerobic respiration produce in muscles?
  1. Lactic acid
  2. Ethanol
  3. Carbon dioxide
  4. Oxygen

Question 8

What is anaerobic respiration in yeast called?
  1. Fermentation
  2. Neutralisation
  3. Transpiration
  4. Diffusion

Question 9

What are the main products of anaerobic respiration in yeast?
  1. Ethanol and carbon dioxide
  2. Lactic acid and oxygen
  3. Water and oxygen
  4. Protein and glucose

Question 10

Compared with aerobic respiration, how much energy does anaerobic respiration release?
  1. Less energy per glucose molecule
  2. More energy per glucose molecule
  3. Exactly the same amount of energy
  4. No energy at all

Question 11

What is oxygen debt after exercise?
  1. Extra oxygen needed to remove lactic acid
  2. Oxygen stored in muscles before exercise
  3. Oxygen used during resting respiration
  4. Oxygen released by anaerobic respiration

Question 12

After exercise, which organ converts lactic acid back into glucose?
  1. The liver
  2. The lungs
  3. The kidneys
  4. The pancreas

Question 13

Which process happens in both plant cells and animal cells?
  1. Respiration
  2. Photosynthesis
  3. Pollination
  4. Digestion

Question 14

How can a plant release energy in darkness?
  1. Respire stored glucose
  2. Photosynthesise without light
  3. Convert mineral ions directly into energy
  4. Pause every energy-requiring process

Question 15

Which yeast product makes bread dough rise?
  1. Carbon dioxide
  2. Oxygen
  3. Nitrogen
  4. Hydrogen

Question 16

In brewing, ethanol is produced from what by yeast fermentation?
  1. Glucose
  2. Oxygen
  3. Protein
  4. Mineral ions

Question 17

Besides carbon dioxide, which substance does aerobic respiration produce?
  1. Water
  2. Ethanol
  3. Lactic acid
  4. Oxygen

Question 18

What does limewater turning milky beside germinating seeds show?
  1. Carbon dioxide is released
  2. Carbon dioxide is absorbed
  3. Oxygen is released
  4. Nitrogen is released

Question 19

Which cellular use of respiration builds new cell material?
  1. Making larger molecules
  2. Maintaining body temperature
  3. Contracting muscle fibres
  4. Sending nerve impulses

Question 20

Which process moves air into and out of the lungs?
  1. Breathing
  2. Respiration
  3. Digestion
  4. Circulation

Question 21

Which activity relies most on anaerobic respiration?
  1. A 100 m sprint
  2. A slow walk
  3. A gentle cycle
  4. A steady jog

Question 22

What can lactic acid buildup cause during intense exercise?
  1. Muscle fatigue
  2. Higher oxygen production
  3. Faster glucose storage
  4. Increased photosynthesis

Question 23

Which use of respiration helps a mammal stay near 37 °C?
  1. Maintaining body temperature
  2. Making new cells
  3. Contracting muscles
  4. Sending nerve impulses

Question 24

Which condition promotes fermentation in yeast?
  1. Little or no oxygen
  2. Abundant oxygen
  3. No glucose
  4. Boiling temperature

Question 25

What happens to the rate of respiration in muscle cells during exercise?
  1. It increases
  2. It decreases
  3. It stays the same
  4. It changes only in the lungs

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Review Cellular Respiration questions for Biology, with correct answers shown and coverage across aerobic respiration; anaerobic respiration; energy transfer in cells.

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