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