Question 1

The mechanism of genetic control in which genes are not transcribed and therefore are not expressed in the presence of those target products in sufficient supply is called

Accepted Answer

To avoid waste and overproduction in the cell, some genes are "turned off" by the presence of the product of that gene expression.

Question 2

An internal change in the original nucleotide sequence of a gene or genes within an organism's genome is known as

Accepted Answer

Mutation occurs as an internal change in the original nucleotide sequence of a gene or genes within an organism's genome.

Question 3

The uptake of free DNA from the environment and recombination with the recipient's homologous DNA is known as

Accepted Answer

Transformation involves recipient uptake of DNA that is free in the environment when another bacterial cell dies and undergoes lysis.

Question 4

The change of the bacterial genotypes through the exchange of DNA from one cell to another is known as

Accepted Answer

Recombination is an event that occurs frequently in many varieties of bacteria and is a major means by which bacteria may achieve genetic diversity.

Question 5

The mechanism of genetic control in which genes are induced only when the substrate to be degraded by enzymatic action is present is called

Accepted Answer

To avoid waste and overproduction of enzymes in the cell, some genes are "turned on" only by the presence of the substrate of that gene expression.

Question 6

All genes within an organism comprise that organism's

Accepted Answer

Chromosomes are elements of the genome. Nucleotides and deoxyribonucleic acid are building blocks of genes.

Quiz 2: Bacterial Genetics Metabolism and Structure