True-False Quiz - DNA and Mutations:
True / False

DNA stands for deoxyribonucleic acid.

One complete DNA molecule consists of a single helix.

The building blocks of DNA are called nucleotides.

One nucleotide is composed of two parts: a sugar and a nitrogen base.

The sugar in DNA is called ribose.
True / False

With respect to the bases, A binds with T and C binds with G.

Complementary bases are held together by hydrogen bonds.

With one nucleotide, the nitrogen base is attached to the phosphate group.

The "backbone" or outer strands of DNA are repeating sugars and bases.

The genetic code lies in the order of nitrogen bases.
True / False

Four bases in a row make up one codon.

Each codon codes for one amino acid.

Many amino acids bonded together form a protein.

All genetic mutations are harmful.

Genetic mutations may be harmful, neutral, or beneficial.
True / False

A genetic mutation always causes the production of a different protein.

Mutagenic agents are drugs taken by a patient to treat a genetic mutation.

Only mutations in the gametes can be passed on to children.

A cell with 46 chromosomes has 46 DNA molecules.

After DNA replication there are 4 genetically identical DNA molecules.