DNA and Protein Synthesis test review

Front

What is the structure of a nucleotide?

Back

A nucleotide consists of three components: a phosphate group, a sugar (deoxyribose in DNA), and a nitrogenous base.

Front

What role does mRNA play in protein synthesis?

Back

mRNA (messenger RNA) carries the genetic information from DNA to the ribosome, where it serves as a template for protein synthesis.

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Front

What is transcription in the context of DNA and protein synthesis?

Back

Transcription is the process by which a segment of DNA is copied into mRNA by the enzyme RNA polymerase.

Tags

NGSS.HS-LS1-1

Front

What is the function of ribosomes in protein synthesis?

Back

Ribosomes are the cellular structures where protein synthesis occurs, translating the mRNA sequence into a polypeptide chain.

Front

What are the four nitrogenous bases in DNA?

Back

The four nitrogenous bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

How do base pairing rules work in DNA?

Back

In DNA, adenine pairs with thymine (A-T) and cytosine pairs with guanine (C-G) through hydrogen bonds.

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

Front

What is an insertion mutation?

Back

An insertion mutation occurs when one or more nitrogen bases are added to the DNA sequence, potentially altering the reading frame.

Tags

NGSS.HS-LS3-2

Front

What is a substitution mutation?

Back

A substitution mutation occurs when one nitrogen base is replaced by another, which may or may not affect the resulting protein.

Tags

NGSS.MS-LS3-1

Front

What is the significance of the genetic code?

Back

The genetic code is a set of rules that defines how the sequence of nucleotides in DNA is translated into the amino acid sequence of proteins.

Tags

NGSS.HS-LS1-1