DNA test review, Ava Niles

Question 1

What does DNA stand for?

Answer 1

Deoxyribonucleic Acid

Question 2

2 reasons why DNA is unique

Answer 2

contains our genetic code, and it can exactly replicate itself

Question 3

what are the monomers of DNA called?

Answer 3

nucleotides

Question 4

what are the 3 parts of a nucleotide?

Answer 4

5 carbon sugar (deoxyribose), phosphate group, and nitrogen base

Question 5

4 nitrogen bases present in DNA

Answer 5

Adenine, Guanine, Cytosine, and Thymine

Question 6

purines? characteristics?

Answer 6

adenine and guanine, 2 rings

Question 7

Pyrimidines? Characteristics?

Answer 7

Thymine and Cytosine, 1 ring

Question 8

double helix structure discovered but what 4 scientists? What year?

Answer 8

1986. James Watson, Francis Crick, Rosalind Franklin, Maurice Wilkins

Question 9

what did Erwin Chargaff do?

Answer 9

discovered the relationships between Guanine and Cytosine. Adenine and Thymine. through percentages (complementary strands)

Question 10

Backbone of DNA?

Answer 10

deoxyribose, and phosphates

Question 11

what holds DNA molecules together

Answer 11

Hydrogen bonds

Question 12

nitrogen bases are always connected to?

Answer 12

the sugars

Question 13

complementary nucleotides?

Answer 13

A-T and G-C

Question 14

Enzyme that unzips DNA for replication

Answer 14

DNA helicase

Question 15

what does DNA polymerase do?

Answer 15

links complements of old strands of DNA