Question 1

In which of the following stages of embryo development are the three primary germ layers first present?

Options :

A : Blastula

B : Zygote

C : Gastrula

D : Coelomate

E : Morula

Answer: C

Question 2

A double-stranded DNA molecule consists of 20% Guanine. What percentage does Thymine represent in this stand?

Options :

A : 20%

B : 30%

C : 40%

D : 60%

E : 80%

Answer: B

Question 3

In a strenuously exercising muscle, NADH begins to accumulate in high concentration. Which of the

following metabolic process will be activated to reduce the concentration of NADH?

Options :

A : Glycolysis

B : The Krebs cycle

C : Lactic acid fermentation

D : Oxidative phosphorylation

E : Acetyl CoA synthesis

Answer: C

Question 4

In times of starvation, which of the following would NOT be expected to be seen in high quantity in the blood?

Options :

A : Glucagon

B : Ghrelin

C : Ketone bodies

D : Insulin

E : B & D

Answer: D

Question 5

Which of the following statements about electricity flowing through a circuit can be correctly derived from Ohm’s law?

Options :

A : Increasing the voltage decreases the current if the resistance remains unchanged.

B : Increasing the current and the resistance decreases the voltage

C : Increasing the current increases the voltage if the resistance is uncharged.

D : Decreasing the resistance increases the current if the voltage remains uncharged

Answer: C

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