AIR Test Review 2

The assembly of proteins in a cell takes place in the

• nucleus

• vacuoles

• ribosomes

• mitochondria

Proteins are long chains or polymers made up of

• nucleotides

• carbohydrates

• amino acids

• lipids

Which of the following is the correct base-pairing rule for DNA?

• A-U; C-G

• A-G; T-C

• A-T; G-C

• A-C; T-G

A type of mutation that can alter DNA by the loss of a nucleotide base is known as

• substitution

• crossing over

• deletion

• insertion

In Mendel's experiments with a single trait, the trait that disappeared in the first generation and reappeared in the next generation is called the

• homozygous trait

• dominant trait

• recessive trait

• heterozygous trait

In fruit flies, the gray body color (G) is dominant to the ebony body color (g). What is the genotypic ratio of the offspring of a heterozygous gray female and an ebony male?

• 25% Gg, 75% gg

• 50% Gg, 50% gg

• 75% gray, 25% ebony

• 100% gray

The inherited combination of alleles is called the ______

• genotype
• phenotype
• chromosome
• DNA

In a strand of DNA, if it contains 20% of Thymine, then how much Guanine would be present?

• 30%
• 20%
• 80%
• 10%

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

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

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