IGCSE Biology Paper-2: Specimen Questions with Answers 1 - 2 of 203

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Question 1

Question

MCQ▾

What do you mean by DNA sequencing?

Choices

Choice (4)

a.

Technique, which is used to determine the base sequence in a DNA molecule

b.

Technique, which is used to determine the Phosphate sequence in a DNA molecule

c.

Technique, which is used to determine the sugar sequence in a DNA molecule

d.

Question does not provide sufficient data or is vague

Answer

a.

Explanation

DNA sequencing is the process of determining the precise order of nucleotides within a DNA molecule. It includes the technology that is used to determine the order of the four bases — adenine, guanine, cytosine, and thymine — in a strand of DNA.

Question 2

Question

MCQ▾

Diagram shows an influenza virus. Label the part A, B, and C in given picture

Figure Shows an Influenza Virus

Choices

Choice (4)

a.

A-Protein Coat, B-Tail, C-Membrane envelope

b.

A- Fiber, B- RNA , C-Nucleic acid

c.

A-Nucleic Acid, B-RNA, C-Protein Coat

d.

A- membrane envelope, B-Protein Coat, C- RNA

Answer

d.

Explanation

The genome of influenza A and B viruses consists of single stranded RNA of negative sense. Influenza virus are a small number of M2

Protein molecules, which function as ion channels and protein coat surrounded the nucleic acid

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