Final Exam

Front 1

Which of the cells or entities are not true microbial cells but still studied in the scope of microbiology?

Back 1

Viruses, Helminths, and Prions

Front 2

The following do not represent fungi

a. yeasts

b. algae

c. molds

d. mushrooms

Back 2

b. algae

Front 3

Viruses

a. are intracellular parasites

b. are not living entities

c. are misfolded proteins

d. require the host cell to replicate

e. a, b, and d above

Back 3

e. a, b, and d above

Front 4

True or False: Prions cause all kinds of properly folded proteins to misfold.

Back 4

False

Front 5

True or False: Bacteria always cause disease.

Back 5

False

Front 6

True or False: Helminths are unicellular.

Back 6

False

Front 7

True or False: Yeasts are unicellular.

Back 7

True

Front 8

Produces yogurt

Back 8

Lactic Acid Fermentation Pathway

Front 9

Produces bread

Back 9

Ethanolic Fermentation Pathway

Front 10

Requires oxygen

Back 10

Acetic Acid Production

Front 11

Produces sauerkraut

Back 11

Lactic Acid Fermentation Pathway

Front 12

Produces swiss cheeses

Back 12

Proprionic Acid Fermentation Pathway

Front 13

Vinegar is the final product

Back 13

Acetic Acid Production

Front 14

Acetobacter aceti is an imporant organism in this process

Back 14

Acetic Acid Production

Front 15

Sacchyromyces cerevisiae is an important organism in this process

Back 15

Ethanolic Fermentation Pathway

Front 16

Lactobacillus bulgaricus and Streptococcus thermophilus are important organisms in this process

Back 16

Lactic Acid Fermentation Pathway

Front 17

This is an aerobic metabolic process.

Back 17

Acetic Acid Production

Front 18

Which is true for the enzyme alcohol dehydrogenase?

Back 18

It cleaves the glycosidic bond between glucose and galactose

Front 19

True or False: Stapylococcus enterotoxin causes diarrhea and/or vomiting

Back 19

True

Front 20

Which of the following is/are true about Staphylococcus aureus?

Back 20

They can survive on dry inanimate surfaces

30% of the human population are asymptomatic carriers of this organism

They can be seen as grape-like clusters under the microscope

They thrive in high concentrations of salt

Front 21

The end products of glycolysis are...

Back 21

Pyruvate and NADH

Front 22

True or False: In Yogurt production one is relying on the synergistic relationship between two different bacterial species.

Back 22

True

Front 23

True or False: In Sauerkraut production one is relying on the floral succession of three different classes of bacteria.

Back 23

True

Front 24

True or False: In sauerkraut production one is relying on the synergistic relationship between three different classes of bacteria.

Back 24

False

Front 25

What is the end product of bacteria used in yogurt production that causes the milk protein casein to precipitate out of the milk to produce curds?

Back 25

Lactic Acid

Front 26

What is the functional definition of a coliform?

Back 26

A facultatively anaerobic Gram negative rod that ferments lactose to produce acid

Front 27

True or False: Bacteria like Bacillus cereus and Clostridium botulinum produce endospores as part of their reproductive cycle.

Back 27

False

Front 28

Which of the following is FALSE about endospores?

Back 28

They are metabolically active

Front 29

Botulism toxin is dangerous to human consumers. Which of the following conditions would not pose threat to a human consumer?

Back 29

The toxin is heat liable (destroyed by heat)

Front 30

True or False: Once the botulism toxin binds to the acetocholine receptors of nerve cells, it can be displaced if an anti toxin is administered.

Back 30

False

Front 31

Which of the following are FALSE regarding Bacillus cereus?

Back 31

It does not break gelatin down into small peptides and amino acids

Front 32

Which is TRUE regarding prions?

Back 32

They are infectious proteins

Front 33

Which is FALSE about prion diseases?

Back 33

They are not transmissible

Front 34

Occurs sporadically in humans at a ratio of 1 in 1 million people

Back 34

CJD

Front 35

Primarily composed of beta sheets

Back 35

PrPsc

Front 36

Caused by consuming cattle with BSE

Back 36

vCJD

Front 37

Due to a mutation in a gene that encodes for the PrPc protein

Back 37

CJD

Front 38

Composed primarily of alpha helices

Back 38

PrPc

Front 39

Can be caused by corneal transplants

Back 39

vCJD

Front 40

Typically affects humans within the age range of 50 to 60

Back 40

CJD

Front 41

Can be caused by brain surgery with contaminated surgical instruments

Back 41

vCJD

Front 42

Can affect humans as early as age 14

Back 42

vCJD

Front 43

Are associated with the surface of brain cells

Back 43

PrPc

Front 44

Are not associated with the surface of brain cells

Back 44

PrPsc

Front 45

Are responsible for starch like (amyloid) deposits between brain cells

Back 45

PrPsc