Chapter 4- Genes And DNA

Question 0

In a nucleic acid chain, a subunit that consists of a sugar, a phosphate, and a nitrogenous base

Answer 0

Nucleotide

Question 1

Deoxyribonucleic acid

Answer 1

DNA

Question 2

The four nitrogenous bases

Answer 2

Adenine, thymine, guanine, and cytosine

Question 3

Who discovered that a and t go together, and g and c go together

Answer 3

Erwin Chargaff

Question 4

Who discovered that DNA has a spiral shape

Answer 4

Rosalind Franklin

Question 5

Who discovered that DNA looks like a long twisted ladder, and built a model

Answer 5

James Watson and Francis Crick

Question 6

A molecule that is present in all living cells, and that plays a role in protein production

Answer 6

RNA

Question 7

A cell organelle composed of RNA and protein, the site of protein synthesis

Answer 7

Ribosome

Question 8

Amino acids

Answer 8

Each code of three bases on an mRNA segment is code for one amino acid

Question 9

Building proteins

Answer 9

Amino acids are joined to make a protein based on the mRNA code

Question 10

A change in the nucleotide-base sequence of a gene or DNA molecule

Answer 10

Mutation

Question 11

Base pair replaced

Answer 11

Substitution

Question 12

Base pair added

Answer 12

Insertion

Question 13

Base pair removed

Answer 13

Deletion