Question
Which statement correctly describes genome and proteome?
Only the genome but not the proteome can be analysed using gel electrophoresis.
The genome and the proteome are the same in all tissues in an organism.
In cells of different tissues, the genome is the same while the proteome varies.
Only mutations in the proteome but not in the genome cause any variability.
Answer/Explanation
Ans: C
Question
What is a proteome?
The genes that code for all the proteins in the ribosome
The group of proteins that generate a proton gradient in mitochondria
The entire genome of a prokaryote
The entire set of proteins expressed by an organism at a certain time
Answer/Explanation
Ans: D
Question
The number of protein-coding genes in the human genome is estimated to be about 20 000, which is much less than the size of the proteome. What is one reason for this?
A Exons are removed from RNA before translation.
B There are more types of amino acids than nucleotides.
C mRNA can be spliced after transcription.
D Base substitutions occur during transcription.
Answer/Explanation
Ans: C