DNA Protein Synthesis Mutations Heredity

What is Cytosine?

• A type of sugar

• A type of phosphate

• Part of the DNA that helps make up the code

• A type of lipid

What is Guanine?

• Causes a mutation if it bonds with anything other than cytosine

• Bonds with Cytosine

• Is part of the protein that is found in blue eyes

• Is never found in cells

A mutation causes a sequence of DNA that has the nucleotides TTG to be changed to TCG. The resulting protein has a different sequence of amino acids.  Which type of mutation is this?

• missense

• nonsense

• silent

• frameshift

Tags

NGSS.HS-LS3-2

What does DNA provide the code for?

• nitrogenous base pairing

• protein synthesis

• deoxyribose formation

• nucleotide synthesis

Tags

NGSS.HS-LS1-1

The structure of DNA resembles a twisted ladder. Which structural components form the rungs of the ladder?

• deoxyribose sugars

• phosphate groups

• nitrogenous base pairs

• ribosomes

Which is an agent that causes a mutation in DNA or chromosomes?

• nondisjunction

• karyotype

• mutagen

• phenotype

Tags

NGSS.HS-LS3-2

Missense, nonsense, and silent mutations are examples of which type of mutation?

• substitution

• insertion

• deletion

• replication

Tags

NGSS.HS-LS3-2

Which accurately describes the relationship between cancer risk and exposure to mutagens?

• Cancer risk decreases when a person is exposed to mutagens because the risk of DNA mutation decreases as well.

• Cancer risk increases when a person is exposed to mutagens because the risk of DNA mutations increases as well.

• Cancer risk increases when a person is exposed to mutagens because the risk of DNA mutations decreases considerably.

• Cancer risk decreases when a person is exposed to mutagens because the risk of DNA mutations increases considerably.

Tags

NGSS.HS-LS3-2

Many different types of mutations can occur within the body. An individual experiences a mutation that changes a base in a mRNA strand, but during translation the mRNA strand still creates the same protein. Which type of mutation is responsible for the change in the mRNA base?

• silent

• missense

• nonsense

• insertion

Tags

NGSS.HS-LS1-1

Which step in transcription occurs first?

• mRNA moves the code from the nucleus to the ribosome for protein production.

• A gene is expressed through protein production.

• RNA polymerase attaches to the promoter.

• A repressor protein must attach to the operator.