Mutagens

________ are agents in the environment, such as certain chemicals and radiation, that directly or indirectly bring about mutations.

Tags

NGSS.HS-LS3-2

Which of the following is not an example of a mutagen?

• a. photolyases      

• b. nitrous acid     

• c. gamma ray

• d. UV light

Tags

NGSS.HS-LS3-2

What do you call the other chemical mutagens that causes small deletions or insertions nucleotide pairs?

   

   

•   a. nonsense mutagen

• b. nucleoside analog   

• c. nitrous acid

• d. frameshift mutagens

The exposure of DNA to _________ can convert the base adenine (A) to a form that no longer pairs with thymine (T) but instead pairs with cytosine (C).   

Tags

NGSS.HS-LS3-2

Which of the following best describes a mutagen?

• Direct manipulation of an organism's genes using biotechnology.

• Any organism whose genetic material has been altered using genetic engineering techniques.

• An agent which can change the structure of DNA, causing a mutation.

The three types of mutagens are:

• Radiation (physical)

• Chemical

• Infectious Agents (biological)

• Smoke

• GMOs

Which of the following is a common type of chemical mutagen?

• A) Ethidium bromide

• B) X-rays

• C) Ultraviolet light

• D) Photolyase

Tags

NGSS.HS-LS3-2

What is the primary effect of ionizing radiation on DNA?

• A) It causes thymine dimers.

• B) It breaks the DNA strands.

• C) It adds methyl groups to DNA bases.

• D) It causes frameshift mutations.

Which of the following agents is known to cause mutations by inserting itself between DNA bases?

• A) Intercalating agents

• B) Alkylating agents

• C) Deaminating agents

• D) Base analogs

What type of mutation is most likely to be caused by UV light?

• A) Point mutation

• B) Thymine dimer formation

• C) Deletion mutation

• D) Insertion mutation

Tags

NGSS.HS-LS3-2