The organisms used in the process of fermentation

11 Jun The organisms used in the process of fermentation

Question
Question 1(Mandatory) (2 points)

The organisms used in the process of fermentation:
Question 1 options:

A) Produce products, such as acids, which inhibit the growth of other microorganisms

B) Metabolize all the oxygen in food

C) Produce water in the food

D) Utilize all the nutrients in food

E) All of the above

SaveQuestion 2(Mandatory) (2 points)

What is the main component of the bacterial cell wall?

Question 2 options:

A) Protein

B) Nitrogen

C) Lipids

D) Calcium

E) Peptidoglycan

SaveQuestion 3(Mandatory) (2 points)

What are “rod-shaped” bacteria called?

Question 3 options:

A) Cocci

B) Streptococci

C) Bacilli

D) Vibrio

E) Spirals

SaveQuestion 4(Mandatory) (2 points)

Which of the following are NOT killed by high temperatures?

Question 4 options:

A) Staphylococcus aureus

B) Staphylococcaltoxin

C) Botulinum toxin

D) Streptococcus pyogenes

E) All of the above are killed by heat

SaveQuestion 5(Mandatory) (2 points)

Which of the following bacteria can grow in the refrigerator (?50C)?

Question 5 options:

A) Listeria monocytogenes

B) Yersinia enterocolitica

C) Bacteroides

D) Clostridium tetani

E) A and B only

SaveQuestion 6(Mandatory) (2 points)

Which of the following is/are NOT true about the bacterial cell wall:

Question 6 options:

A) It helps maintain cell shape and structure

B) It provides an attachment site for bacterial structures such as pili and flagella

C) It is identical to the cell wall of human cells

D) It helps counteract osmotic pressure exerted on the cell

E) All of the above are true about the bacterial cell wall

SaveQuestion 7(Mandatory) (2 points)

Farmer’s Markets and Organic foods grown without the use of pesticides are all the rage in today’s society; however, ingestion of raw milk and products made from it can pose severe health risks, including death. Why do you think this is?

Question 7 options:

A) Raw milk is devoid of Vitamin D and Calcium

B) Raw milk has not undergone pasteurization

C) All sources of raw milk come from goats

D) All of the above

E) None of the above

SaveQuestion 8(Mandatory) (2 points)

What is chyme?

Question 8 options:

A) An accessory organs of the digestive system that is closely associated with the small intestine

B) A part of the villi in the small intestine

C) The most important factor for regulating secretions in the small intestine

D) A goblet cell

E) Nome of the above

SaveQuestion 9(Mandatory) (2 points)

Which of the following is/are proposed (not yet proven) beneficial effects of consuming probiotics?

Question 9 options:

A) May help prevent diarrhea due to bacterial or virus infection to this

B) May improve digestion of lactose in people who are intolerant

C) May cause a reduction in blood cholesterol levels

D) May strengthen the immune system

E) All of the above

SaveQuestion 10(Mandatory) (2 points)

How do some bacteria, such as Chlamydia trachomatis, invade and enter a human cell?
Question 10 options:

A) By producing InvasinsB) By producing FlagellaC) By producing ToxoidsD) By producing SuperantigensE) By producing lipopolysaccharidesSaveQuestion 11(Mandatory) (2 points)

What is the first step in making beer?

Question 11 options:

Extracting residual proteins from wort

Chilling the wort

Using yeast to ferment proteins

Crushing barley that has reached germination and dried (malted), into grist

Boiling hops

SaveQuestion 12(Mandatory) (2 points)

Which of the following organisms is used to prepare soy sauce from soya bean?

Question 12 options:

A) Aspergillus oryzae

B) Staphylococcus aureus

C) Clostridium botulinum

D) Listeria monocytogenes

E) Yersinia enterocolitica

SaveQuestion 13(Mandatory) (2 points)

Which of the following are the steps for the Gram Stain procedure, in order?

Question 13 options:

A) Place bacterial sample on slide, add crystal violet, add iodine, add decolorizer, add safranin

B) Place bacterial sample on slide, add iodine, add crystal violet, add decolorizer, add safranin

C) Place bacterial sample on slide, add crystal violet, add safranin, add decolorizer, add iodine

D) Place bacterial sample on slide, add safranin, add decolorizer, add iodine, add crystal violet

E) Place bacterial sample on slide, add decolorizer, crystal violet, add safranin, add iodine

SaveQuestion 14(Mandatory) (2 points)

Mycobacterium species cause tuberculosis and leprosy, and Nocardia species, which cause disease in individuals with weakened immune systems, contain a high concentration of mycolic acids outside of their thin layer of peptidoglycan. Mycolic acids are waxy-like lipids that prevent these bacteria from staining properly when tested with the Gram stain. What alternate test has been developed to identify these bacteria?

Question 14 options:

A) Silver nitrate (Ag.)

B) Hematoxylin and Eosin (H&E) staining

C) Giemsa Staining

D) Acid -fast staining

E) Cajal’s Silver Stain (Cajal)

SaveQuestion 15(Mandatory) (2 points)

How do bacteria try to evade your immune system?

Question 15 options:

A) They develop ways to avoid being “eaten” by phagocytic cells using their capsules and/or protective surface proteins

B) They produce compounds that halt the cascade of events that usually results in the death of the engulfed cell by phagocytes

C) They develop ways to directly attack the host’s immune cells

D) All of the above

E) They act as bystander cells and slowly kill CD4 T cells resulting in full-blown AIDS

SaveQuestion 16(Mandatory) (2 points)

With regard to Bacteria, what is a Reservoir?

Question 16 options:

A) Dead bacteria in the host that causes an allergic reaction

B) A place where bacteria live without causing disease (i.e., they have not yet colonized a host)

C) A vaccine containing live, attenuated bacteria

D) A living or non-living source where bacteria can live

E) B and D only

SaveQuestion 17(Mandatory) (2 points)

How can you tell the difference between Gram-positive and Gram-negative bacteria?

Question 17 options:

A) Gram-positive cell walls contain a thick layer of peptidoglycan, while Gram-negative cell walls contain a thin layer of peptidoglycan

B) A Gram stain turns Gram-positive bacteria purple/blue and Gram-negative bacteria pink/red while Gram-positive cell walls do

C) Gram-negative cell walls DO NOT contain Lipoteichoic acids (LTAs) while Gram-positive cell walls do

D) All of the above

E) None of the above

SaveQuestion 18(Mandatory) (2 points)

Binomial nomenclature involves the use of two names to identify organisms and determine the scientific names of bacteria: Genus and Species. How are these names written?

The genus appears lower-cased and in bold: The species appears capitalized and in bold. (e.g., staphylococcus Aureus)

The genus appears capitalized and in bold: The species appears lower-cased and in bold. (eg. Staphylococcus aureus

None of the above

Question 18 options:

A) The genus appears capitalized and in italics: The species appears lower-cased and in italic. (e.g., Staphylococcus aureus)

B) The genus appears lower-cased and in italics: The species appears capitalized and in italic. (e.g., staphylococcus Aureus)

C) The genus appears lower-cased and in bold: The species appears capitalized and in bold. (e.g., staphylococcus Aureus)

D) The genus appears capitalized and in bold: The species appears lower-cased and in bold. (eg. Staphylococcus aureus)

E) None of the above

SaveQuestion 19(Mandatory) (2 points)

Which of the following is/are examples of bacterial adherence factors used by bacteria to adhere to host cells resulting in infection?

Question 19 options:

A)

Flagella

B) Pili

C) LPS

D) Capsule

E) All of the above

SaveQuestion 20(Mandatory) (2 points)

What is an endospore?

Question 20 options:

A) A flowering plant’s unit of reproduction, capable of developing into another such plant

B) An offspring

C) A form that certain species of bacteria create in order to preserve themselves during harsh times, such as during periods of drought, nutrient depletion, or adverse environmental conditions

D) The part of a fruit that reproduce

E) The form in which an alien being travels to earth

SaveQuestion 21(Mandatory) (1 point)

Bacilli are rod-shaped bacteria.

Question 21 options:

True

False

SaveQuestion 22(Mandatory) (1 point)

Aspergillus niger produces citric acid.

Question 22 options:

True

False

SaveQuestion 23(Mandatory) (1 point)

Microvilli are effective absorption areas located in the small intestines.

Question 23 options:

True

False

SaveQuestion 24(Mandatory) (1 point)

Invasins are hair-like projections on the surface of gram negative bacteria bacteria helping them stick to the cells they infect.

Question 24 options:

True

False

SaveQuestion 25(Mandatory) (1 point)

Pili are short external cell structures that can mediate attachment to host cells

Question 25 options:

True

False

SaveQuestion 26(Mandatory) (1 point)

Flagella are long external cell structures that can mediate attachment to host cells,

Question 26 options:

True

False

SaveQuestion 27(Mandatory) (1 point)

Endospores are viruses that contain a tough exterior wall.

Question 27 options:

True

False

SaveQuestion 28(Mandatory) (1 point)

Lipid A is a vaccine agaunst Strep throat.

Question 28 options:

True

False

SaveQuestion 29(Mandatory) (1 point)

Streptococci are bacteria that are shaped like a chain of spheres.

Question 29 options:

True

False

SaveQuestion 30(Mandatory) (1 point)

Lipoteichoic Acid (LTA) is a substance found in gram positive cell walls that help bacteria adhere to host cell.

Question 30 options:

True

False

SaveQuestion 31 (2 points)

Which of the following is/are (an) effective way(s) to help prevent the spread of disease?

Question 31 options:

A) Wash your hands with soap and warm flowing water for at least 20 seconds

B) Cover your mouth and nose with a tissue when you cough or sneeze

C) Put your used tissue in a waste basket or garbage can

D) If you don’t have a tissue, cough or sneeze into your upper sleeve or elbow, not your hands

E) All of the above

SaveInformation

Bacterial Cell

Question 32 (1 point)

Label the image of the bacterial cell in the correct order.

Question 32 options:

1. flagellum 2. ribosomes 3. nucleoid 4. plasma membrane 5. capsule 6. cell wall 7. pilus

1. ribosomes 2. capsule 3, plasma membrane 4. cell wall 5. flagellum 6, pilus 7. nucleoid

1. flagellum 2. pilus 3. nucleoid 4. plasma membrane 5. ribosomes 6. cell wall 7. capsule

1. pilus 2.flagellum 3. ribosomes 4. plasma membrane 5. nucleoid 6. capsule 7. cell wall

Save