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
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