Life Science: Chapter 3 Test

Cytosine and ____________________ bases fit together.

• thymine

• adenine

• guanine

• uracil

The pairing of bases allows cells to ____________________.

• replicate

• store genetic information

• synthesize proteins

• transcribe genetic code

Using DNA to identify who committed a crime is a.

• genetic engineering

• DNA fingerprinting

• genetic disease

• DNA cloning

Which of these is a subunit of DNA?

• RNA

• trait

• ribosome

• Nucleotide

Which 2 molecules forms the sides (backbone) of the DNA ladder?

• deoxyribose and adenine
• deoxyribose and a hydrogen bond
• sugar and the nucleus
• deoxyribose (sugar) and phosphate

the “factory” that creates new proteins

• messenger RNA

• ribosome

Some genetic disorders, such as sickle cell disease, are due to a.

• a ribosome.

• a mutation.

• a DNA fingerprint

• genetic engineering.

Where does messenger RNA go?

• to a protein

• to a genetic engineer

• to a ribosome

• to a chromosome

Each set of three bases is a code for a.

• a specific cell.

• a specific chromosome.

• a specific ribosome.

• a specific amino acid.

Along with a sugar and a phosphate, what is the third part of a nucleotide?

• a. a base

• b. a protein

• c. a chromosome

• d. a ribosome