Chapters 7, 8, 9 Quiz Questions

Question 1

Substrates must be brought into the cell to be used for growth metabolism. One method modifies the substrate as it is brought into the cell. This method allows bacteria to use a variety of sugars and is called

ABC Transport

Group translocation

simple diffusion

ion-coupled transport

facilitated diffusion

Answer 1

Group translocation

Question 2

The feeder pathway autotrophs use to fix carbon is called

Glycolysis

The Citric acid cycle

The Entner Duodoroff Pathway

Fermentation

The Calvin cycle

Answer 2

The Calvin cycle

Question 3

A cell is unable to synthesize the amino acid cysteine. Assuming the cell could survive, which element would you expect it would have the most difficulty assimilating?

P

N

C

S

O

Answer 3

S

Question 4

The first amino acid incorporated into bacterial proteins is:

Methionine

Tyrosine

N-Formylmethionine

Arginine

Tryptophan

Answer 4

N-Formylmethionine

Question 5

Bacteria can protect their DNA using proteins that may cut up foreign DNA. What are these proteins called?

Ribozymes

Restriction endonucleases

RNA polymerases

DNA polymerases

Flippases

Answer 5

Restriction endonucleases

Question 6

Penicillin is an antibiotic that targets the cell wall synthesis of bacteria. What exactly does penicillin bind to prevent growth?

Bam complex

Undecaprenylphosphate

Transpeptidase

Lipid A

Murein

Answer 6

Transpeptidase

Question 7

Which protein complex is responsible for incorporating proteins specifically into the outer membrane of gram-negative bacteria?

Sec proteins

Bam complex

HsiB/HsiC

ABC transporter

ClpV complex

Answer 7

Bam complex

Question 8

Which secretory system forms a phage-related contractile structure (like inserting a needle) for the injection of effector proteins (like toxins) into target cells?

Type I

Type VI

Type II

Type IV

Type III

Answer 8

Type VI

Question 9

Which of the following is a TRUE difference between prokaryotic and eukaryotic DNA, RNA, and Protein synthesis.

Eukaryotes have 70S ribosomes, while prokaryotes have 80S ribosomes for protein synthesis.

Eukaryotes may have operons to control gene expression, but prokaryotes do not.

Prokaryotes couple transcription and translation, while eukaryotes do not.

Prokaryotes use DNA polymerase to replicate DNA and eukaryotes do not have DNA polymerases.

Eukaryotes use sigma factors to recognize promoters and prokaryotes do not

Answer 9

Prokaryotes couple transcription and translation, while eukaryotes do not.

Question 10

Which of the following is not targeted by any antimicrobial agent?

Murein production

Large subunit of prokaryotic ribosome

All of the answers are targets of at least one antimicrobial agent.

DNA gyrase

Small subunit of prokaryotic ribosome

RNA polymerase

Answer 10

All of the answers are targets of at least one antimicrobial agent.