IGCSE Biology Paper-3: Specimen Questions with Answers 9 - 13 of 230

Question number: 9

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Question

The figure shown mitochondria. Find A and B?

The figure shown Mitochondria

The Figure Shown Mitochondria

Find A and B in given diagram

Choices

Choice (4) Response

a.

A is cristae and B is matrix

b.

A is matrix and B is inner membrane

c.

A is cristae and B is inner membrane

d.

A is inner membrane and B is outer membrane

Answer

a.

Explanation

Mitochondrial cristae are found in inner membrane, which allows a great space for processes that done across the membrane. Mitochondrial matrix have all genetic system and enzymes, which are responsible for the central reaction of oxidative metabolism.

Passage

Vertebrates are categorized by their external features.

Complete the paragraph by using the name of a vertebrate class in each space.

Question number: 10 (1 of 3 Based on Passage) Show Passage

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Short Answer Question▾

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Toad, frog, salamander are the example of…

Explanation

Amphibians

Question number: 11 (2 of 3 Based on Passage) Show Passage

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Some vertebrates are covered in scales and has fins attached to help it move by the water. They are……

Explanation

Fish

Question number: 12 (3 of 3 Based on Passage) Show Passage

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Some vertebrate’s bodies protected with feathers. They do not have teeth but use their beaks to eat their food. They are…

Explanation

Birds

Question number: 13

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Adaptation is a trait with a functional role in the life of an organism that is maintained by natural selection. Is adaptation is a process or a part of body?

Explanation

Adaptation is a process, rather than a part of a body.