Storing and using genetic information

Question 1

Phenotype

Answer 1

Outward physical manifestation of organism

Question 2

Genotype

Answer 2

Full hereditary information of organism

Question 3

DNA

Answer 3

Right handed double helix

Question 4

Nucleotide monomer

Answer 4

2- deoxyribose sugar
Base
Phosphate group

Question 5

Nucleus

Answer 5

5-10 micrometres with 1/4 RNA production

Question 6

Histone proteins

Answer 6

H1, H2a, H2b, H3, H4

Question 7

Heterochromatin

Answer 7

Condensed

Question 8

Euchromatin

Answer 8

Loose

Question 9

DNA replication is

Answer 9

Semi conservative and bi directional

Question 10

How can histones be modified to separate DNA strands?

Answer 10

Enzymatically modified

Displaced by chromatin remodelling complexes

Question 11

When are chromosomes seen easiest?

Answer 11

Metaphase

Question 12

Exons

Answer 12

Coding regions

Question 13

Introns

Answer 13

Non coding regions

Question 14

Explain the degeneracy of the genetic code

Answer 14

All amino acids except methionine and tryptophan are encoded by more than 1 codon

Question 15

mRNA

Answer 15

Transcribed from DNA in nucleus and carries information for protein synthesis

Question 16

What allows many proteins to be made?

Answer 16

Alternative splicing

Reading frame

Question 17

Where is rRNA produced?

Answer 17

Nucleus