Question
Biological mutagens include:
Viruses.
Bacteria.
Transposons.
All of the above.
Viruses.
Bacteria.
Transposons.
All of the above.
Hint:
Biological agents include all molecules that are associated with living organisms.
The correct answer is: All of the above.
- Mutagens are factors that cause mutation
- Mutagens can be classified into: physical, chemical and biological
- Biological agents include factors which are of biological origin (living organisms)
- Infectious agents like bacteria, viruses are included under biological mutagens
- Transposons or jumping genes are sequence of nucleotides that shift its position within a genome
Related Questions to study
Intercalating agents cause which type of mutations in the DNA.
Frameshift mutation.
Point mutation.
Translocation mutation.
None of the above.
Intercalating agents cause which type of mutations in the DNA.
Frameshift mutation.
Point mutation.
Translocation mutation.
None of the above.
In the following compound which, is one of the intercalating agents?
Ethidium bromide
5-bromouracil
Purine
Clastogen
In the following compound which, is one of the intercalating agents?
Ethidium bromide
5-bromouracil
Purine
Clastogen
Which chemical mutagens add an OH-group to DNA base pairs?
Hydroxylating agents.
Deaminating agents.
Alkylating agents.
All of the above.
Which chemical mutagens add an OH-group to DNA base pairs?
Hydroxylating agents.
Deaminating agents.
Alkylating agents.
All of the above.
Which base is obtained due to the deamination of adenine?
Guanine.
Cytosine.
Uracil.
Hypoxanthine.
Which base is obtained due to the deamination of adenine?
Guanine.
Cytosine.
Uracil.
Hypoxanthine.
Congenital malformations are caused by which of the following mutagens?
- Carcinogens.
- Teratogens.
- Clastogens.
- None of the above.
Congenital malformations are caused by which of the following mutagens?
- Carcinogens.
- Teratogens.
- Clastogens.
- None of the above.
Damages and errors in the DNA can cause___________
Mutation
DNA repair
Translation
Transcription
Damages and errors in the DNA can cause___________
Mutation
DNA repair
Translation
Transcription
5-bromouracil is the analog of which base?
Thymine
Guanine
Cytosine
Uracil
5-bromouracil is the analog of which base?
Thymine
Guanine
Cytosine
Uracil
Nitrous acid is a __________ agent.
Alkylating agent.
Deaminating agent.
Hydroxylating agent.
None of the above
Nitrous acid is a __________ agent.
Alkylating agent.
Deaminating agent.
Hydroxylating agent.
None of the above
DNA is sensitive to temperatures above _______.
90o C.
85o C.
95o C.
80o C.
DNA is sensitive to temperatures above _______.
90o C.
85o C.
95o C.
80o C.
Ionizing radiations include:
X- rays.
Alpha rays.
Gamma rays.
All of the above.
Ionizing radiations include:
X- rays.
Alpha rays.
Gamma rays.
All of the above.
Generally, the mutations are:
Harmful.
Dominant.
Recessive.
Useful.
Generally, the mutations are:
Harmful.
Dominant.
Recessive.
Useful.
Which of the following base analogs exhibit tautomerism?
5-bromouracil.
2-aminopurine.
6-mercaptopurine.
- Acycloguanosine
Which of the following base analogs exhibit tautomerism?
5-bromouracil.
2-aminopurine.
6-mercaptopurine.
- Acycloguanosine
Point Mutation is caused by:
Base analogs.
Alkylating agents.
Hydroxylating agents.
Metal ions.
Point Mutation is caused by:
Base analogs.
Alkylating agents.
Hydroxylating agents.
Metal ions.
Examples of base analogs are ________.
Ethidium bromide.
Acridine dyes.
Mustard gas.
5-Bromouracil.
Examples of base analogs are ________.
Ethidium bromide.
Acridine dyes.
Mustard gas.
5-Bromouracil.
Alkyl bases are induced in DNA by which chemical mutagen?
Deaminating agents
Alkylating agents.
Hydroxylating agents.
None of the above.
Alkyl bases are induced in DNA by which chemical mutagen?
Deaminating agents
Alkylating agents.
Hydroxylating agents.
None of the above.
