quiz 3 review

Question 1

Many cells of the immune system have receptors that detect peptidoglycans and lipopolysaccharides. How do pathogenic bacteria avoid detection?

Answer 1

Pathogens often encase themselves in a gelatinous capsule

Question 2

Plasmids are distinguished from bacterial chromosomes in that

Answer 2

plasmids have few genes, bacterial chromosomes have many genes

Question 3

The prokaryotic DNA is located in the

Answer 3

nucleoid region

Question 4

A microbiologist explains to one of her biology classes that her research focuses on the nucleoid region of the cholera bacteria. This means that she is studying a region within the bacterium that contains the

Answer 4

nucleic acids

Question 5

Certain prokaryotes can withstand drying and hotter temperatures because of their ability to form

Answer 5

endospores

Question 6

An oil spill occurs, and a member of the clean up team suggests adding fertilizer. What might this accomplish?

Answer 6

The fertilizer encourages the growth of microbes that can break down the oil

Question 7

Are transformation and transduction the same process?

Answer 7

No; although both involve gene transfer the sources of the genetic material differ

Question 8

Why is chlamydia much more common than syphilis?

Question 9

Which of the following is not a shape seen in prokaryotes?

Answer 9

Icosahedrons

Question 10

Which of the following statements about generalized transduction is false?

Question 11

Bacteria typically use binary fission, but under special circumstances sexual reproduction is possible via horizontal gene transfer.

Answer 11

False

Question 12

Although there are many differences between bacteria and archaea, one similarity that they share is that they both have ether linkages in their cell membranes.

Answer 12

False

Question 13

Which of the following statements about sexually transmitted diseases (STDs) is false?

Answer 13

Because chlamydia has both bacterial and viral characteristics, it cannot be treated with antibiotics

Question 14

Gonorrhea and syphilis are most commonly controlled by

Answer 14

antibiotics

Question 15

Endospores are highly resistant to environmental stress.

Answer 15

True

Question 16

If the label on a slide reads Gram-positive bacillus, what would a students expect to see?

Answer 16

Purple rod shaped cells

Question 17

Check all of the mutually beneficial relationships between prokaryotes and eukaryotes.