L14

Question 1

Cellular processes involving DNA (4)

Answer 1

Transcription, Replication, Cell division, DNA Repair

Question 2

Cellular processes involving RNA (3)

Answer 2

Transcription, Translation, Gene regulation

Question 3

Cellular processes involving nucleotides

Answer 3

Energy transfer (ATP- ribonucleotide), DNA, RNA. Cofactors in enzymes (NAD+, FAD+), metabolism, signalling (ATP converted to AMP where rising levels of AMP signals low E in the cell)

Question 4

Difference between ribose sugar and deoxyribose sugar?

Answer 4

Deoxy only has one –OH. Ribo has two –OH.

Question 5

Purine - _ ring/s

Answer 5

2, AG

Question 6

Pyridmidine - _ ring/s

Answer 6

1, CUT

Question 7

Uracil replaces _ in RNA synthesis

Answer 7

Thymine

Question 8

AT has _ H bonds?

Answer 8

2

Question 9

GC has _ H bonds?

Answer 9

3

Question 10

Phosphate is attached at the _ end

Answer 10

5’

Question 11

Proteins more likely to bind in _____ groove as ___

Answer 11

Major, it is more spacious

Question 12

3 forms of DNA

Answer 12

A - in the lab
B- usually in this form
Z- left handed helix

Question 13

Difference between Thymine and Uracil?

Answer 13

Thymine has an additional methyl group

Question 14

Why is the antiparallel structure of DNA important in DNA replication?

Answer 14

Because it replicates the leading strand one way and the lagging strand the other way. During DNA replication the leading strand is replicated continuously whereas the lagging strand is replicated in segments known as Okazaki fragments.

Question 15

What is different about the tertiary structures of DNA and RNA?

Answer 15

DNA is double stranded and RNA is single stranded.