DNA (Ch. 4)

Question 1

Heriditary units that make up DNA

Answer 1

Genes

Question 2

The name for the shape of DNA (two twisted strands)

Answer 2

Double Helix

Question 3

• Building blocks of nucleic acids
• Made up of a monosaccharide + phosphate group + nitrogenous base

Answer 3

Nucleotides

Question 4

• A nitrogenous base
• Pairs with thymine in DNA

Answer 4

Adenine

Question 5

• A nitrogenous base
• Pairs with cytosine in DNA

Answer 5

Guanine

Question 6

DNA and globular proteins spun together in a loose thread-like form

Answer 6

Chromatin

Question 7

Bunched up chromatin ready for cell division

Answer 7

Chromosomes

Question 8

• DNA double helix “unzips” from the bottom and free floating nucleotides fill in the gaps
• Forms two new DNA molecules but each contain one half (strand) of the original

Answer 8

Semiconservative replication