Microbial Genetics

Which of these is NOT true about DNA?

• serves as the genetic material passed from parent to offspring

• remains constant despite changes in environmental conditions

• provides the instructions for the synthesis of messenger RNA

• is read by ribosomes during the process of translation

Which of these represents the central dogma of how genetic information flows in cells?

• protein to DNA to RNA

• RNA to DNA to protein

• DNA to RNA to protein

• DNA to protein to RNA

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

Which enzyme replaces the RNA nucleotides in a primer with DNA nucelotides?

• DNA polymerase III

• DNA polymerase I

• primase

• helicase

Which of these is NOT involved in the initiation step of DNA replication?

• ligase

• DNA gyrase

• single-stranded binding protein

• primase

During which stage of prokaryotic transcription is the σ subunit of the RNA polymerase involved?

• initiation

• elongation

• termination

• splicing

Which of the following is involved in the initiation of transcription?

• primer

• origin

• promoter

• start codon

What is the name of the three-base sequence in the mRNA that binds to a tRNA molecule?

• P site

• codon

• CCA binding site

• anticodon

Which of the following is the amino acid that appears at the N-terminus (the one that appears first) in all newly translated prokaryotic and eukaryotic polypeptides (proteins)?

• tryptophan

• methionine

• selenocysteine

• glycine

What is the smallest unit of heredity (genotype)?

• chromosome
• gene
• codon
• nucleotide

Tags

NGSS.HS-LS3-1

The DNA of microorganisms is made up of subunits called

• nucleotides.

• histones.

• amino acids.

• polymerases.