Sign In

Biology for IGCSE & O level - Respiration (Section 4)

1
Which part of the plant would have the most mitochondria?
Answer
(C)
Root hair
2
Which of the following statements best describes the relationship between breathing and respiration?
Answer
(B)
Breathing provides the oxygen needed for respiration.
3
What is the role of soda lime in the apparatus used to investigate the uptake of oxygen by respiring yeast?
Answer
(B)
To absorb carbon dioxide produced by the yeast.
4
What is the role of an activator in respiration?
Answer
(A)
Speed up the reactions.
5
Which of the following is the primary function of cellular respiration?
Answer
(C)
To release energy from food molecules
6
What are the key components needed for aerobic respiration?
Answer
A
B
7
What type of respiration is occurring in the muscles when a person is running a marathon?
Answer
A
B
8
In the investigation of the effect of temperature on respiration, why is it important to use a water bath?
Answer
(C)
To control the temperature.
9
Which of the following are associated with an oxygen debt?
Answer
A
B
C
10
In which type of respiration is alcohol and carbon dioxide produced as end products?
Answer
(B)
Anaerobic respiration in yeast