4.2.1 The Genome

Question 1

A gene is

Answer 1

a length of DNA that codes for a polypeptide/protein

Question 2

A genome is

Answer 2

the complete set of genes present in a cell

Question 3

The proteome is

Answer 3

the full range of proteins that a cell is able to produce

Question 4

The proteome is usually larger than the genome of an organism, this due to the large amount of

Answer 4

post-translational modification of proteins (often in the Golgi apparatus)

Question 5

Each gene is also capable of producing multiple different proteins via

Answer 5

alternative splicing

Question 6

Splicing is the process by which

Answer 6

base sequences corresponding to the introns are removed and the functional exons are joined together

Question 7

Image showing the increasing complexity of the proteome from the genome, processes such as alternative splicing and protein modification enable the large number of proteins to be produced

Answer 7