1.1 Structure Of DNA

Question 1

What is the complementary base paring rule?

Answer 1

Adnine - thymine

Cytosine - guanine

Question 2

What type of bond exists between the bases?

Answer 2

Hyrdogen bond

Question 3

What is the bame given to two stands running in opposite directions?

Answer 3

Antiparallel

Question 4

What would be the complementary strand for; ATGCAGTC

Answer 4

TACGTCAG

Question 5

A secrion of double stranded DNA was found to have 60 guanine bases and 30 adenine bases. Whats the total number of deoxyribose sugars in this section?

Answer 5

60G+60C+30A+30T = 180 bases

= 180 deoxyribose sugars

Question 6

A singal strand of a DNA molecule has 3000 nucleotides of whitch 20% are thymine and 15% are guanine. What percentage of adenine would be present?

Answer 6

20%

Question 7

Is a bactera a prokaryote?

Answer 7

Yes

Question 8

Is a green plant a prokaryote

Answer 8

No

Question 9

Is yeast a prokaryote

Answer 9

No

Question 10

Are animals Eukaryotes?

Answer 10

Yes

Question 11

What type of cell produces a circular chromosome?

Answer 11

Bacteria (prokaryotes)

Question 12

What cells contain plasmids?

Answer 12

Bacteria (prokaryotes) and yeast

Question 13

Descride the areangment of DNA in the chromosomes of eukaryotic cells

Answer 13

DNA is tightly coiled and packed with histones

Question 14

Other than the chromosome what cell organelles contain DNA?

Answer 14

Mitochondria and chloroplasts