Lab Exam 3 Lec Qs

Question 1

Protozoa are best described as being

Answer 1

non-photosynthetic unicellular microorganisms

Question 2

Which is not a structure used for locomotion by protists

Answer 2

• contract vacuoles

Question 3

Which organism is best known as the “ brain eating amoeba”

Answer 3

• Naegleria fowleri

Question 4

The cell walls of fungi are largely composed of which of the following

Answer 4

Chitin

Question 5

The source of agar, which is typically used in the microbiology laboratory, is which of the following?

Answer 5

red algae

Question 6

Which of the following is the most common cause of human yeast infections?

Answer 6

candida albicans

Question 7

Lichens attached to a surface using which structure

Answer 7

rhizines

Question 8

You encounter a lichen with leafy structures, which term describes this lichen?

Answer 8

foliose

Question 9

The component of a virus that is/are extended from the envelope for attachment

Answer 9

spikes

Question 10

What is another name for a non-enveloped virus?

Answer 10

naked virus

Question 11

A virus containing nucleic acid and a capsid is called a/an _______ virus or _______ virus

Answer 11

• non-enveloped & naked virus

Question 12

Which of the following leads to the destruction of the host cells?

Answer 12

lytic cycle

Question 13

The definition of Lysogeny is …

Answer 13

• phage DNA is incorporated into host cell DNA

Question 14

Which of the following would be considered a symptom?

Answer 14

Body ache and chills

Question 15

What period of disease describes when the patient begins to feel general signs and symptoms?

Answer 15

Prodromal period

Question 16

A communicable disease that can be easily transmitted from person to person is which type of disease?

Answer 16

Contagious

Question 17

Which of the following would be a sign of an infection?

Answer 17

Fever

Question 18

Pathogen A has an ID50 particles, pathogen B has an ID50 of 1,000 particles, and pathogen C has an ID50 of 100,000 particles. Which pathogen is most virulent?

Answer 18

Pathogen A

Question 19

Examine the graph and determine the approximate ID 50 of the virus

Answer 19

13,000 particles

Question 20

Which of the following choices lists the steps of pathogenesis in the correct order?

Answer 20

Exposure, adhesion, invasion, infection

Question 21

Which of the following applies to hyaluronidase?

Answer 21

It acts as a spreading factor

Question 22

All of the following are examples of entry via the parenteral route except…

Answer 22

Hair follicle because it’s a natural opening

Question 23

Endotoxins are

Answer 23

part of the gram-negative cell

Question 24

Superantigens produce intense immune responses by stimulating the host immune cells to produce

Answer 24

Cytokines

Question 25

An enterotoxin targets which type of cell?

Answer 25

Intestinal cells

Question 26

Cattle are allowed to pasture in a field that contains the farmhouse well, and the farmer’s family becomes ill with a gastrointestinal pathogen after drinking the water. What type of transmission of infectious agents would this be?

Answer 26

Vehicle Transmission bc water is the vehicle

Question 27

A mosquito bites a person who subsequently develops a fever and abdominal rash. What type of transmission would this be?

Answer 27

Biological Vector Transmission

Question 28

Which of the following would NOT be considered an emerging disease?

Answer 28

Tuberculosis

Question 29

Which of the following would NOT be considered as a reemerging disease?

Answer 29

Zika virus

Question 30

What causes the hypothalamus to release prostaglandins?

Answer 30

Cytokines

Question 31

Which cells produce and secrete mucus?

Answer 31

Goblet cells

Question 32

Which of the following best describes the innate and nonspecific immune system system?

Answer 32

A generalized and nonspecific set of defenses against a class or group of pathogens

Question 33

Which type of cells line the respiratory tract?

Answer 33

Mucociliary epithelial cells

Question 34

Which of the following constantly sheds, dead cells along with any microbes that may be attached to those cells?

Answer 34

Epidermis

Question 35

Which of the following serve as chemical signals between cells and stimulate a wide range of nonspecific defenses?

Answer 35

Cytokines

Question 36

Histamine, leukotrienes, prostaglandins, and bradykinin are examples of which of the following?

Answer 36

Chemical mediators that promote inflammation

Question 37

Activation of C3a results in

Answer 37

Acute inflammation

Question 38

Which of the following is classified as an agranulocyte?

Answer 38

Monocyte and lymphocyte

Question 39

Which of the following is the most abundant leukocyte?

Answer 39

Neutrophil

Question 40

Macrophages arise from which of the following

Answer 40

Monocytes

Question 41

A child falls and suffers a deep cut on her leg. The cut went through her skin and she is bleeding. Which of the following defense mechanisms will participate in eliminating contaminating microbes?

Answer 41

Phagocytosis in the inflammatory response