Question

1. Which of the following is/are required for retrotransposons to move from one location to another in the genome?

Select one or MORE:

a. RNA polymerase

b. DNA polymerase

c. ribosomes

d. reverse transcriptase

2.

Which of the following is/are not commonly used in gene expression and cell replication in human cells?

Select one or MORE:

a. ribosomes

b. reverse transcriptase

c. DNA-dependent RNA polymerase (DNA-->RNA)

d. DNA-dependent DNA polymerase (DNA-->DNA)

e. RNA-dependent RNA polymerase (RNA --> RNA)

3.

Ubiquitin can be added to lysine, cysteine, serine and threonine residues in proteins. The ubiquitination (addition of ubiquitin) of a protein would:

Select one:

a. target the protein to be translocated to the rough endoplasmic reticulum to continue translation of the peptide.

b. trigger the hydrolysis of its complementary mRNA sequence.

c. trigger alternative splicing of mRNA by snRNP.

d. trigger the removal of the pro-segment of a enzyme, activating it.

e. target the protein for breakdown by proteasomes in the cell.

4.

miRNA can:

Select one or MORE:

a. form a complex with proteins that will block translation of mRNA containing complementary sequence

b. form a complex with proteins that will break down mRNA containing complementary sequence

c. remove introns from pre-mRNA in eukaryotes

d. fluoresce when complementary mRNA is present

5.

Coordination of gene expression of enzymes required in a single metabolic pathway in eukaryotes would require:

Select one or MORE:

a. organization of genes into operons

b. the same combination of control elements for all genes in the pathway

c. alternative splicing of a single gene to produce all enzymes in a pathway

d. presence of the correct combination of activator proteins for the genes in the pathway