05 Jan Which bacteria

Question 1

The study of the practical use of microbes in various industries and technologies is

Select one:

a. Applied microbiology

b. Biotechnology

c. Bioengineering

d. Microbial ecology

e. Industrial microbiology

Question 2

Hazard Analysis and Critical Control Point Principle procedures include :

Select one:

a. Determining the microbial load in pre-processed food

b. Determining adequate separation of waste and ready to eat product(s)

c. Sanitary guidelines and sufficient employee training

d. All of these

Question 3

Which of the following can produce methane?

Select one:

a. cow GI tract

b. sheep GI tract

c. goat GI tract

d. all of these

Question 4

Of the following choices, which could be used in the treatment of a patient in order to determine their cancer subtype?

Select one:

a. DNA fingerprinting

b. PCR

c. Microarray analysis

d. Oryza sativa

Question 5

Which step can occur even more rapidly by PCR?

Select one:

a. Target DNA removed from cells and isolated

b. Cloning host treated with calcium chloride and receives plasmid

c. Target DNA and plasmid treated with the same restriction endonuclease

d. Desired protein is produced by cloning host

e. Gene is amplified by multiplication of cloning host

Question 6

Heterotrophs include

Select one:

a. Producers, consumers and decomposers

b. Consumers and decomposers

c. Producers only

d. Consumers only

e. Producers and consumers

Question 7

Bacillus thuringiensis

Select one:

a. Causes food poisoning

b. Is a biopesticide

c. Is used in cheese-making

d. Is a microorganism used as food

e. All of the choices are correct

Question 8

The breakdown of man-made compounds by decomposers is called

Select one:

a. Mineralization

b. Bioremediation

c. Decomposition

d. Parasitism

e. Saprobism

Question 9

The conversion of nitrate (NO3-) to nitrogen gas (N2) is called

Select one:

a. Ammonification

b. Nitrogen fixation

c. Photosynthesis

d. Nitrification

e. Denitrification

Question 10

Which of the following is not true of fluorescent in situ hybridization (FISH)?

Select one:

a. Applied to intact cells

b. Can locate genes on chromosomes

c. Can identify unknown bacteria without culturing

d. Uses electrophoresis to separate the DNA

e. Can detect RNA in cells

Question 11

Which organism is used to initiate the fermentation of cabbage to make sauerkraut?

Select one:

a. Saccharomyces cerevisiae

b. Leuconostoc mesenteroides

c. Streptococcus lactis and Lactobacillus

d. Propionibacterium

e. Spirulina

Question 12

Which of the following techniques is mismatched with its use in DNA fingerprinting?

Select one:

a. Restriction endonucleases to cut DNA

b. PCR amplification to get more copies

c. Electrophoresis to separate fragments

d. Hybridization probes to digest the DNA sample

e. Southern blot for a visual record

Question 13

The zone of soil around roots of plants is called the

Select one:

a. Lithosphere

b. Biosphere

c. Ionosphere

d. Rhizosphere

e. Hydrosphere

Question 14

The yeast used in making bread, beer and wine is

Select one:

a. Saccharomyces cerevisiae

b. Leuconostoc mesenteroides

c. Streptococcus lactis and Lactobacillus

d. Propionibacterium

e. Spirulina

Question 15

Which step in wine making involves the crushing of the fruit?

Select one:

a. Aging

b. Fermentation

c. Preparation of must

d. Storage

e. Malting

Question 16

The oxidation of ammonia (NH4+) to nitrate (NO3-) and nitrite (NO2-) is called

Select one:

a. Ammonification

b. Nitrogen fixation

c. Photosynthesis

d. Nitrification

e. Denitrification

Question 17

Sequences of DNA that are identical when read from the 5′ to 3′ direction on one strand and the 3′ to 5′ direction on the other strand are

Select one:

a. Palindromes

b. Reverse transcriptase

c. Restriction endonucleases

d. Ligases

e. DNA polymerases

Question 18

DNA is denatured at

Select one:

a. 37 oC

b. 42 oC

c. 60 oC

d. 90 oC

e. 100 oC

Question 19

This is often used in forensic science to distinguish one sequence of DNA from another by comparing the sequence of the strands at specific loci

Select one:

a. Cloning

b. Gene therapy

c. Antisense therapeutic

d. DNA fingerprinting

e. None of the choices are correct

Question 20

Which bacteria ferment milk lactose, producing acids that curdle milk?

Select one:

a. Saccharomyces cerevisiae

b. Leuconostoc mesenteroides

c. Streptococcus lactis and Lactobacillus

d. Propionibacterium

e. Spirulina