Biomedical Science

Question 1

1A test that looks for a carrier of the sickle cell gene before marriage is

Easy

A. X-ray imaging B. genetic screening C. blood transfusion D. vaccination

Question 2

2Genetic counselling helps couples to

Easy

A. understand the risk of passing on inherited disorders B. avoid exercise C. choose a wedding date D. grow taller

Question 3

3Down syndrome is caused by

Easy

A. a bacterial infection B. a missing X chromosome C. a vitamin deficiency D. an extra copy of chromosome 21

Question 4

4A person with sickle cell disease usually has the genotype

Easy

A. AA B. SS C. AC D. AS

Question 5

5The sex chromosomes of a human male are

Easy

A. YY B. XO C. XX D. XY

Question 6

6If both parents have the genotype AS, what is the probability that a child will be SS?

Medium

A. 1/2 B. 3/4 C. 0 D. 1/4

Question 7

7PCR (polymerase chain reaction) is used to

Hard

A. amplify DNA B. cut DNA C. stain cells D. sequence proteins

Question 8

8A normal human body cell contains

Easy

A. 44 chromosomes B. 23 chromosomes C. 48 chromosomes D. 46 chromosomes

Question 9

9A mutation is

Easy

A. a type of cell B. a change in the DNA sequence C. a vaccine D. a hormone

Question 10

10Haemophilia, in which blood does not clot properly, is

Medium

A. a dominant disorder B. caused by poor diet C. an infectious disease D. a sex-linked recessive disorder