This set of Biochemical Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Cellular Information – Mutation”.
1. Genetic material of virus can be permanently altered by mutation.
a) True
b) False
View Answer
Explanation: Mutation can permanently alter the genetic materials of all species. Mutation results in an error to all the genetic activities.
2. Human eye uses 4 genes to make structures to detect light. Cone and rod cells are involved in this light detection. Identify the number of each cell.
a) 3 cone cells and 1 rod cell
b) 2 cone cells and 2 rod cells
c) 1 cone cell and 3 rod cells
d) 2 cone cells and 1rod cell
View Answer
Explanation: Cone cells are for the color vision and rod cells are for the night vision. All these four cells arise from a single parent gene. This is due to the mutation which occurred during evolution.
3. Which region of DNA is formed into a new gene?
a) Coding regions
b) Poly A tail
c) Histones
d) Non-coding regions
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Explanation: Non coding region of DNA are formed into new gene after mutation. Other functions of non-coding DNA are translational regulation for protein coding, Origin of replication and etc.
4. Depurination is a method of characterizing which of these mutations?
a) Induced mutation
b) Error induced during DNA repair
c) Spontaneous mutation
d) Error prone replication
View Answer
Explanation: Spontaneous mutation occurs with non-zero probability. Deamination, Depurination and Tautomerism are all spontaneous mutations.
5. Which of these is a major cause for spontaneous mutation?
a) Induced mutation
b) Error induced during DNA repair
c) Spontaneous mutation
d) Error prone replication
View Answer
Explanation: Majority of spontaneous mutation arise due to error prone replication. These error replications occur either by the addition, deletion or substitution of a base pair.
6. Which of this can cause induced mutation?
a) Deamination
b) Depurination
c) Hydroxylamine
d) Tautomerism
View Answer
Explanation: Induced mutation can be caused due to chemicals. The main chemicals are:- Hydroxylamine, Alkylating agents and radiation techniques.
7. What is non-sense mutation?
a) Coding for different protein
b) Coding for same amino acid
c) Code for stop codons
d) Coding for different vitamins
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Explanation: Non-sense mutation codes for stop codons. The other mutations are silent mutation and missense mutation respectively.
8. Who explained the concept of mutation first?
a) Etienne Geoffroy Saint-Hilaire
b) Charles Darwin
c) Hugo de Vries
d) William Bateson
View Answer
Explanation: Charles Darwin explained the concept of mutation by natural selection. He also published a book called origin of species. He said that mutation is a source of novelty.
9. What is lethal mutation?
a) Changes genetic products
b) New protein is synthesized
c) Death of organism
d) Reversion of point mutation
View Answer
Explanation: Lethal mutation leads to the death of organism causing the mutation. The mutation occurs in the genes essential for growth and development.
10. Evolution is the result of mutation.
a) True
b) False
View Answer
Explanation: Mutation plays role in both normal and abnormal biological processes. Evolution, Cancer is part of mutation.
Sanfoundry Global Education & Learning Series – Biochemical Engineering
To practice all areas of Biochemical Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.
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