Biology for IGCSE & O level - Respiration (Section 1)
1
Which of the following describes the role of the substrate in respiration?
Answer
(B)
It is the molecule upon which an enzyme acts.
2
What is the purpose of measuring the rate of CO2 production in the investigation of yeast respiration?
Answer
(D)
To assess the rate of respiration.
3
What is a likely outcome of anaerobic respiration in human muscle cells during vigorous exercise?
Answer
(B)
Production of lactic acid
4
What will be the effect on the rate of respiration if the temperature is increased?
Answer
(B)
The rate of respiration will increase.
5
What is the role of oxygen in aerobic respiration?
Answer
(C)
It accepts electrons at the end of the process.
6
Which of the following factors affect the rate of respiration? (Select all that apply)
Answer
A
B
C
7
Which of the following is NOT a use of energy in a living organism?
Answer
(C)
Cell expansion
8
Which of the following is a byproduct of anaerobic respiration in muscle cells?
Answer
(C)
Lactic acid
9
Which statement is correct regarding the amount of energy released from a molecule of glucose during aerobic respiration compared to anaerobic respiration?
Answer
(D)
Aerobic respiration releases much more energy
10
What is the main function of respiration?
Answer
(C)
To release energy from food.
11
What is the role of enzymes during respiration?
Answer
(B)
To speed up chemical reactions.
12
What is the role of glucose in respiration?
Answer
(C)
It is the fuel that is broken down to release energy.
13
What is the primary role of glucose in the process of respiration?
Answer
(C)
To provide energy
14
What is a key difference between aerobic and anaerobic respiration?
Answer
(C)
Aerobic respiration requires oxygen.
15
Which type of cell would you expect to have the most mitochondria?
Answer
(C)
Muscle cell
16
Why do sprinters often hold their breath during a 100-meter race?
Answer
(D)
Because of the intense anaerobic respiration.
17
What is a key difference between aerobic and anaerobic respiration regarding energy yield?
Answer
(A)
Aerobic respiration produces more ATP.
18
What type of respiration occurs in the absence of oxygen?
Answer
(C)
Anaerobic respiration
19
Where does aerobic respiration primarily occur?
Answer
(C)
Mitochondria
20
Which of the following statements best describes the term "oxygen debt"?
Answer
(C)
The additional oxygen needed after exercise to repay the oxygen used during anaerobic respiration.
21
What is the name of the process by which a cell uses energy to transport molecules across the cell membrane?
Answer
(C)
Active transport
22
Which of the following is the best definition of aerobic respiration?
Answer
(A)
The breakdown of glucose with the use of oxygen.
23
What is the main purpose of the soda lime in the apparatus used to investigate the uptake of oxygen by respiring yeast?
Answer
(B)
To absorb the carbon dioxide produced by the yeast.
24
In which part of a cell does the majority of aerobic respiration occur?
Answer
(C)
Mitochondria
25
During intense exercise, why does the body need to repay an oxygen debt?
Answer
(B)
To convert lactic acid back to glucose.
26
What type of respiration produces alcohol as a byproduct?
Answer
(B)
Anaerobic respiration in yeast
27
What is the chemical formula for glucose?
Answer
(C)
C6H12O6
28
What is the main reason for breathing heavily after a period of intense exercise?
Answer
(A)
To supply the extra oxygen needed to convert lactic acid back into glucose.
29
What does the term 'fermentation' refer to, in the context of anaerobic respiration?
Answer
(B)
The process of producing energy from glucose without oxygen.
30
Which term describes the extra volume of oxygen needed after exercise?
Answer
(A)
Oxygen debt
31
Which of the following is NOT a product of aerobic respiration?
Answer
(C)
Glucose
32
What is a key difference between aerobic and anaerobic respiration?
Answer
(D)
Aerobic respiration requires oxygen.
33
Which part of the cell is likely to have a high concentration of enzymes involved in respiration?
Answer
(C)
The mitochondria
34
Which of these are the end products of aerobic respiration?
Answer
(B)
Carbon dioxide and water
35
Which of the following statements are correct about the process of aerobic respiration? (Select all that apply)
Answer
A
C
D
36
What is the primary role of ATP in the cells?
Answer
(C)
To provide energy for cellular processes
37
Which of the following is a byproduct of anaerobic respiration in yeast?
Answer
(C)
Alcohol
38
Which of the following best describes the term "oxygen debt"?
Answer
(B)
The extra oxygen needed to remove lactic acid after exercise.
39
What is the role of oxygen in the process of respiration?
Answer
(C)
To accept electrons in the electron transport chain.
40
During strenuous exercise, when the oxygen supply to muscle cells is insufficient, what type of respiration occurs?
Answer
(C)
Anaerobic Respiration
41
During vigorous exercise, which type of respiration is primarily used by the muscle cells when oxygen supply is limited?
Answer
(B)
Anaerobic respiration
42
Which of the following is a characteristic of aerobic respiration, but not anaerobic respiration?
Answer
(C)
It requires oxygen.
43
In which process does glucose NOT get fully broken down?
Answer
(B)
Anaerobic respiration
44
What is the role of ATP in cellular processes related to respiration?
Answer
(B)
It provides energy for cellular activities.
45
Which process does NOT require energy?
Answer
(C)
Diffusion of oxygen
46
Which of the following is the role of enzymes in respiration?
Answer
(B)
To catalyze the reactions.
47
What is the general name for the process by which glucose is broken down in cells?
Answer
(B)
Respiration
48
What is the initial step in the breakdown of glucose in both aerobic and anaerobic respiration?
Answer
(C)
Glycolysis
49
What is the primary function of respiration in living organisms?
Answer
(B)
To release energy from food.
50
In aerobic respiration, which molecule acts as the final electron acceptor?
