Here we have Cameroon GCE Advanced Level Biology Paper 2 June 2021 questions. These questions will help you prepare for the upcoming GCE exam. A-Level GCE Biology paper 2 June 2021.

Advanced Level Biology 2 June 2021

Subject Title	BIOLOGY
Paper No./Title	2- Theory
Subject code No.	0710

Time Allowed: Three hours

Answer any FIVE of the eight questions.

If more than five questions are answered, only the first five will be assessed.

All Questions carry equal marks. Marks allocated to part of questions are indicated in brackets.

Illustrate your answers wherever desirable with large, clear and fully labelled diagrams.

You are reminded of the necessity for good English and orderly presentation in your answers.

A-Level GCE Biology paper 2 June 2021/ GCE Advanced Level Biology Paper 2 June 2021 questions

Question 1

(a) Make a fully labelled drawing of the stomach of a named ruminant.

(b) Briefly describe how a named herbivore is adapted for mechanical and chemical degestion of cellulose.

(c) How are the products of cellulose digestion absorbed and used?

(8, 8, 4 marks)

Question 2:

(a) Explain the following terms as used in reproduction

(i) Pathernogenesis

(ii) Capacitation

(iii) Cortical reaction

(iv) Ovulation

(b) Describe the process of spermatogenesis in Humans.

(c) How is spermatogensis hormonally controlled in Humans.

(8, 7, 5 marks)

Question 3

(a) What are pullutants? Give three examples

(b) Describe briefly the hazards of water and air pollution.

(c) Differentiate between biodegradable and non-degradable pollutants giving at least one example of eaxh.

(6, 10, 4 marks)

Question 4

(a) Outline:

(i) Mendel’s First Law of inheritance.

(ii) Mendel’s Second Law of inheritance.

(b) Explain, using appropriate genetic symbols, the possible blood groups of children whose father is heterozygote blood group A and mother heterozygote blood group B.

(c) If these parents have two children, what is the probability that both will be blood group A?

(4, 14, 2 marks)

Question 5

Nucleic acids (DNA and RNA) are important components in the synthesis of proteins in living organisms.

(a) Compare DNA and RNA.

(b) Describe the events that occurs in the translation of mRNA into polypeptides in cells.

(8, 12 marks)

Question 6

(a) Make a large fully labelled drawing of the cross-section of a human eye.

(b) Identify the problems involved in the following eye defects and their methods of correction:

(i) Long-sightedness (Hypermetropia)

(ii) Short-sightedness (Myopia)