IGCSE Biology Paper-3: Specimen Questions with Answers 9 - 13 of 358

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Question 9

Question

MCQ▾

The figure shown mitochondria. Find A and B?

The Figure Shown Mitochondria

Choices

Choice (4)

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 10 (1 of 3 Based on Passage)

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Write in Short

Short Answer▾

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 11 (2 of 3 Based on Passage)

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Short Answer▾

Toad, frog, salamander are the example of …

Explanation

Amphibians

Question 12 (3 of 3 Based on Passage)

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Short Answer▾

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

Explanation

Fish

Question 13

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Short Answer▾

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.

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