iGCSE Biology (0610)-21.1 Biotechnology and genetic modification- iGCSE Style Questions Paper 2

Question

Some of the characteristics of bacteria are listed.
           1 can make complex molecules
           2 can reproduce quickly
           3 have cytoplasm
           4 may cause diseases
Which characteristics make bacteria useful in biotechnology and genetic engineering?
A 1, 2, 3 and 4            B 1 and 2 only                         C 2 and 3 only                     D 3 and 4 only

Answer/Explanation

Ans

B

Question

Genetically engineered bacteria are used to produce human proteins.
Into which component of the bacterial cell is human DNA inserted to produce human proteins?
A    cell wall
B    nucleus
C    plasmid
D    rough endoplasmic reticulum

Answer/Explanation

Ans
C

Question

The diagram shows the structure of a bacterial cell.

The presence of structure X in the bacterial cell is one reason why bacteria are used in genetic engineering.

What is structure X?

A    endoplasmic reticulum
B    mitochondria
C    plasmid
D    ribosome

Answer/Explanation

Ans:    C

Question

What are all reasons why bacteria are useful in genetic engineering?
       A  They are very small. They do not need large containers. They have no mitochondria.
       B  They reproduce asexually. They can double their numbers in twenty minutes in good
             conditions. They have cell walls.
       C  They have the same genetic code as other organisms. They have plasmids. There is a lack
             of ethical concern about their use.
       D  Their DNA is not in a nucleus. They have a cell membrane. They have a large surface area
             to volume ratio.

Answer/Explanation

Ans: C

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