IGCSE Biology Paper-2: Specimen Questions with Answers 5 - 7 of 203

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Question 5

Question

MCQ▾

Which is the correct arrangement of food chain.

Choices

Choice (4)

a.

Find Correct Order of Food Chain – Choice A

b.

Find Correct Order of Food Chain – Choice B

c.

Find Correct Order of Food Chain – Choice C

d.

Find Correct Order of Food Chain – Choice D

Answer

b.

Explanation

The flow of energy in ecosystem is always one directional so the correct order will be

Question 6

Question

MCQ▾

Major mass of liver cell is made up of?

Choices

Choice (4)

a.

endothelial cells of blood

b.

Kupffer cells

c.

epithelial cells

d.

Hepatocytes

Answer

d.

Explanation

A hepatocyte is a cell of the parenchymal tissue of the liver. Hepatocytes makes 70 - 85 % of the liver՚s mass. The main functions of hepatocyte are related to Synthesis of protein, Protein storage, Transformation of carbohydrates, Synthesis of cholesterol, bile salts and phospholipids

Question 7

Question

MCQ▾

Dark reaction of photosynthesis occur in.

Choices

Choice (4)

a.

Granum

b.

Thylakoids

c.

Stroma

d.

Question does not provide sufficient data or is vague

Answer

c.

Explanation

Dark reactions or Calvin Benison cycle make use of these organic energy molecules (ATP and NADPH) . It occurs in the stroma part of the chloroplast. ATP provides the energy, while NADPH provides the electrons required to fix the CO2 (carbon dioxide) into carbohydrates.

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