Genes and DNA

The amount of adenine in DNA is always equal to the amount of

• cytosine

• thymine

• uracil

• guanine

long strands of DNA and proteins in a eukaryotic cell

• gene

• chromatin

• chromosome

• mutation

• protein

a change in the nucleotide-base sequence of a gene or DNA molecule that can affect the protein the DNA codes for

• mutation

• gene

• chromosome

• protein

• mutagen

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

any physical or chemical agent that can cause a mutation in DNA

• gene

• nucleotide

• mutation

• mutagen

• ribosome

Tags

NGSS.HS-LS3-2

a subunit of a nucleic-acid chain that consists of a sugar, a phosphate, and a base

• gene

• chromatin

• ribosome

• nucleotide

• mutation

cell structures made of protein and DNA

• ribosome

• chromosome

• protein

• nucleotide

• chromatin

What is the code for a specific amino acid?

• a set of two bases

• a group of three bases

• two base pairs

• a single base

What is the first step in making a protein?

• An RNA copy is made of one side of a DNA segment.

• Amino acids are linked together.

• Bases on tRNA match up with bases on mRNA.

• mRNA is fed through the ribosome.

Tags

NGSS.HS-LS1-1

Nucleotides are made of a sugar, a phosphate, and a

• nitrogenous gene

• nitrogenous base

• nitrogenous ribosome

• nitrogenous protein

DNA is made of subunits called

• cells

• nucleotides

• chromosomes

• traits