1.1 - The structure of DNA

Question 1

What is a nucleotide made out of?

Answer 1

Deoxyribose sugar
Base
Phosphate

Question 2

What makes up the sugar-phosphate backbone?

Answer 2

Deoxyribose sugar
Phosphate

Question 3

What is the base pairing rule?

Answer 3

Adenine - Thymine
Cytosine - Guanine

Question 4

What are the bases in DNA held by?

Answer 4

(weak) Hydrogen bonds

Question 5

How many strands of DNA are in a DNA molecule?

Answer 5

2

Question 6

What can be said about the structure of the strands?

Answer 6

They are anti-parallel

Question 7

Which end of the strand are the deoxyribose sugar and phosphate located?

Answer 7

Deoxyribose sugar - 3’
Phosphate - 5’

Question 8

How is DNA packaged in a Prokaryote?

Answer 8

Single, Circular chromosomes and smaller circular plasmids

Question 9

How is DNA packaged in a Eukaryote?

Answer 9

Linear chromosomes in the nucleus, tightly coiled and packaged by histone proteins

Circular chromosomes in the mitochondria and chloroplast

Question 10

What is special about yeast cells?

Answer 10

It is a Eukaryote that contains Plasmids

Question 11

What shape does a DNA molecule have?

Answer 11

Double Helix

Question 12

What does the base sequence of DNA form?

Answer 12

a Genetic code

Question 13

What is the name for an Associated Protein?

Answer 13

Histone