CIE Biology Paper-4: Specimen Questions 102 - 103 of 120

Question number: 102

One Liner Question▾

Write in Brief

What is the main difference between glycolysis and citric acid cycle?

Explanation

  • Glycolysis process is a linear pathway and citric acid cycle is a cyclic pathway
  • Glycolysis process occur in the cytoplasm and citric acid cycle occurs in mitochondrial matrix
  • Glycolysis occur in both aerobic and anaerobic respiration and citric acid cycle occur in aerobic respiration
  • In glycolysis process, one glucose molecule breaks down to generate 2 NADH2 and 2ATP molecules. In citric acid, cycle 6 NADH2, 2FADH2 and 2ATP molecules on breakdown of two acetyl-coA molecules.

Question number: 103

Essay Question▾

Describe in Detail

Use the letters from Figure to complete Table

Write one letter only in each box to identify the function. You may use each letter once, more than once or not at all.

Figure shows a human body structure with labelling

Figure shows a human body structure with labelling

Figure shows a human body structure label different parts

Table shows different functions of human body parts

Table shows different functions of human body parts, identify them

Function

Letter from figure

To absorb oxygen and give out carbon di oxide

To break down waste compounds

To control Activates of the body

To hold and digest food

To pump blood in the body

Explanation

Table shows different functions of human body parts

Table shows different functions and related parts of human body

Function

Letter from figure

To absorb oxygen and give out carbon di oxide

B

To break down waste compounds

C

To control Activates of the body

A

To hold and digest food

D

To pump blood in the body

E

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