Test 1 Chapter 4

Question 1

Cutaneous anthrax occurs when the endospores enter a wound and germinate. T/F

Answer 1

True

Question 2

In the US, Borrelia burgdorferi causes the most commonly reported vector-borne illness. T/F

Answer 2

True, Tick-Borne Lyme Disease

Question 3

Which of the following is a symbiotic relationship where organism A benefits and organism B is
neither benefited nor harmed?

Answer 3

Commensalism.

Question 4

Which of the following causes bubonic plague?

Answer 4

Yersinia pestis

Question 5

Which member of the CFB group is an important component of the gut microbe?

Answer 5

Bacteroides

Question 6

CFB group

Answer 6

Cytophaga, Fusobacterium, Bacteroides. Gram-Negative Bacteria

Question 7

Which of the deeply branching bacteria is most closely related to LUCA?

Answer 7

Acetothermus spp.

Question 8

Which of the following causes Lyme disease plague?

Answer 8

Borrelia burgdorferi

Question 9

Halophiles require a hypertonic environment. T/F

Answer 9

True

Question 10

Bacteroides accounts for approximately what percentage of the normal gut microbiome?

Answer 10

30%

Question 11

High G+C bacteria are Gram-positive. T/F

Answer 11

True

Question 12

Rate the likelihood of death from Bacillus anthracis from least to most deadly.

Answer 12

cutaneous anthrax, intestinal anthrax, pulmonary anthrax

Question 13

Which symbiotic relationship is when both organisms benefit?

Answer 13

Mutualism

Question 14

Which of the following causes a bulls-eye rash?

Answer 14

Borrelia burgdorferi

Question 15

Mycoplasmas do not have a cell wall. T/F

Answer 15

True

Question 16

Which of the following is NOT true about archaea?

Answer 16

They have cell walls. (Archaea do NOT have cell walls)

Question 17

Pseudomonas aeruginosa is often found in burn patients.

Answer 17

True

Question 18

Which of the following are most closely related to LUCA?

Answer 18

Deeply Branching Bacteria

Question 19

The type of symbiosis in which one organism benefits and the other is harmed is _____.

Answer 19

Parasitism

Question 20

Which of the following is likely the most common cause of food poisoning in the U.S.?

Answer 20

Campylobacter jejuni

Question 21

Which bacteria was responsible for the Great Oxygenation Event?

Answer 21

Cyanobacteria

Question 22

Which of the following statements about the deeply branching bacteria is FALSE?

Answer 22

Deinococcus radiodurans is easily killed by radiation.

Question 23

The accumulation of a greyish mixture of dead cells, pus, red blood cells, and fibrin caused by
Corynebacteria diphtheriae is a

Answer 23

Pseudomembrane

Question 24

Cyanobacteria are the only bacteria that perform oxygenic photosynthesis. T/F

Answer 24

True