Question
The flow diagram summarises three different ways that glucose can be broken down to release
energy.
Which routes involve the action of enzymes?
A 1 only B 1 and 2 only C 2 and 3 only D 1, 2 and 3
Answer/Explanation
Ans: D
Question
The diagram shows two experiments investigating gas exchange in small aerobic crustaceans.
Soda lime absorbs carbon dioxide.
Answer/Explanation
Ans: B
Question
Mammals maintain a constant body temperature.
What process must occur continuously to maintain a constant body temperature?
A excretion
B respiration
C shivering
D sweating
Answer/Explanation
Ans: B
Question
The diagram shows a cell with groups of bacteria around its edge.
The bacteria move to areas of high oxygen concentration.
Which process in the cell causes the bacteria to form these groups?
A digestion
B photosynthesis
C reproduction
D respiration
Answer/Explanation
Ans: B
Question
Which process depends on energy from respiration?
A diffusion
B osmosis
C peristalsis
D photosynthesis
Answer/Explanation
Ans: C