The Genetic Code

The sides of a DNA molecule are made up of sugar molecules alternating with ________________ molecules

• Sulfate

• Phosphate

• Granite

• Gold

Chromosomes are made up mostly of ______________

• Proteins

• DNA

• DNA and Proteins

• None of these

In DNA, adenine always pairs with .

• Phosphate

• Thymine

• Sulfate

• None of these

Each _________ on a chromosome contains the information to code for one specific protein.

• Gene

• Protein

• Chromatid

• DNA

Each group of three DNA bases on a gene codes for a single

.

• Amino Acid

• Protein

• DNA

• Chromosome

True or False; Each gene is located at a specific place on a(n) protein.

• True

• False; Chromosome

DNA synthesis is the process by which DNA copies itself.

• True

• False; Replication

The process of DNA copying itself begins when the two sides of the DNA molecule unwind and separate.

• True

• False; Combine

The genetic code is determined by the sizes of the

nitrogen bases.

• True

• False; Order

Nitrogen bases are molecules that contain nitrogen and

other elements.

• True

• False; Proteins