Meiosis

1. Place the components in order, from smallest to largest.

1. Chromosome

2. DNA nucleotide

3. Codon

4. Gene

• 1-2-4-3

• 2-3-4-1

• 3-4-2-1

• 4-3-2-1

The main difference between the four nucleotides that make up DNA is that they have different

• sugars

• uracil

• bonds

• bases

In humans, where does DNA replication take place?

• cytoplasm

• nucleus

• ribosome

• vacuole

What are bases held together by?

• weak peptide bonds

• strong hydrogen bonds

• weak hydrogen bonds

• strong peptide bonds

A sequence of nucleotides found in the DNA of a chromosome codes for a specific protein or trait. This section of DNA is known as a(n)

• allele

• codon

• gene

• phenotype

RNA from a chipmunk is compared to RNA from a worm. Both will contain the

• sugar deoxyribose and the base thymine.

• sugar deoxyribose and the base uracil.

• sugar ribose and the base thymine.

• sugar ribose and the base uracil.

A DNA nucleotide could contain the following molecules

• deoxyribose, cytosine, and a lipid

• deoxyribose, thymine, and a phosphate group

• ribose, uracil, and a polypeptide

• ribose, adenine, and thymine

Which of the following nucleic acids contains thymine?

• DNA only

• mRNA only

• tRNA only

• All of the above

DNA is a polymer consisting of monomers known as

• peptides

• nucleotides

• amino acids

• phosphates

In nucleotides, the letters A, G, C, and T represent

• phosphate groups

• deoxyribose sugars

• nitrogen bases

• ribose sugars