BIOL 1330 – Which of the following statements

10 Jun BIOL 1330 – Which of the following statements

Question
Which of the following statements regarding the Entner-Doudoroff pathway is TRUE?

NADH is generated.

It involves glycolysis.

ATP is generated.

It involves the pentose phosphate pathway.

NADH and ATP are generated.

Flag this Question

Question 22 pts

Which of the following statements regarding the glycolysis pathway is FALSE?

Two pyruvate molecules are generated.

Two molecules of water are generated.

Two NADH molecules are generated.

One molecule of ATP is expended.

Four ATP molecules are generated via substrate-level phosphorylation.

Flag this Question

Question 32 pts

Figure 5.4

How is ATP generated in the reaction shown in Figure 5.4?

fermentation

photophosphorylation

oxidative phosphorylation

glycolysis

substrate-level phosphorylation

Flag this Question

Question 42 pts

A urease test is used to identify Mycobacterium tuberculosis because

urease is a sign of tuberculosis.

M. tuberculosis produces urease.

M. bovis can cause tuberculosis.

some bacteria reduce nitrate ion.

urea accumulates during tuberculosis.

Flag this Question

Question 52 pts

Figure 5.8

In Figure 5.8, the path labeled “2” is the flow of

glucose.

protons.

water.

electrons.

energy.

Flag this Question

Question 62 pts

Figure 5.1

Which compound is being reduced in the reaction shown in Figure 5.1?

NADH

NAD+

isocitric acid and ?-ketoglutaric acid

?-ketoglutaric acid and NAD+

NADH and isocitric acid

Flag this Question

Question 72 pts

Which one of the following would you predict is an allosteric inhibitor of the Krebs cycle enzyme, ?-ketoglutarate dehydrogenase?

ADP

NAD+

NADH

citric acid

?-ketoglutaric acid

Flag this Question

Question 82 pts

Which of the following uses CO2 for carbon and H2 for energy?

photoautotroph

photoheterotroph

chemoheterotroph

chemoautotroph

Flag this Question

Question 92 pts

Assume you are working for a chemical company and are responsible for growing a yeast culture that produces ethanol. The yeasts are growing well on the maltose medium but are not producing alcohol. What is the most likely explanation?

The temperature is too high.

O2 is in the medium.

The maltose is toxic.

The temperature is too low.

Not enough protein is provided.

Flag this Question

Question 102 pts

Which of the following statements about photophosphorylation is FALSE?

It occurs in photosynthesizing cells.

Light liberates an electron from chlorophyll.

Energy from oxidation reactions is used to generate ATP from ADP.

The oxidation of carrier molecules releases energy.

It requires CO2.

Flag this Question

Question 112 pts

A culture medium consisting of agar, peptone, and beef heart is a

reducing medium.

chemically defined medium.

differential medium.

selective medium.

complex medium.

Flag this Question

Question 122 pts

Most bacteria grow best at pH

7.

14.

9.

5.

1.

Flag this Question

Question 132 pts

The biosafety level (BSL) for a clinical microbiology laboratory working with potentially airborne pathogens, such as tuberculosis bacteria, is

BSL-2.

BSL-4.

BSL-3.

BSL-1.

Flag this Question

Question 142 pts

Figure 6.1

In Figure 6.1, which line best illustrates the growth of a facultative anaerobe incubated aerobically?

c

b

a

Flag this Question

Question 152 pts

Which of the following elements is NOT correctly matched with its cellular function?

nitrogen — needed for amino acid synthesis

phosphorus — used for production of carbohydrates.

magnesium and potassium — required as cofactors for enzymes

phosphorus — incorporated into nucleic acids

sulfur — used for synthesis of thiamin and biotin

Flag this Question

Question 162 pts

The biosafety level (BSL) for most introductory microbiology laboratories is

BSL-4.

BSL-3.

BSL-1.

BSL-2.

Flag this Question

Question 172 pts

Table 6.1

Three different culture media are shown below.

Medium AMedium BMedium CNa2HPO4Tide detergentGlucoseKH2PO4Na2HPO4PeptoneMgSO4KH2PO4(NH4)2SO4CaCl2MgSO4KH2PO2NaHCO3(NH4)2SO4Na2HPO4

In Table, 6.1, in which medium (or media) would an autotroph grow?

C

A

B

A and B

A and C

Flag this Question

Question 182 pts

Three cells with generation times of 60 minutes are inoculated into a culture medium. How many cells are there after 5 hours?

180

32

15

96

900

Flag this Question

Question 192 pts

Figure 6.2

Figure 6.2 shows a typical bacterial growth curve with the y-axis indicating the log of the number of bacteria and the x-axis indicating time in culture. In the figure, which sections of the graph illustrate a logarithmic change in cell numbers?

a and c

c and d

b and d

a and d

a and b

Flag this Question

Question 202 pts

Which of the following is an advantage of the standard plate count?

can be used to count heat-sensitive bacteria

provides immediate results

can be performed on very dilute samples, such as lake water

can readily count cells that form aggregates

determines the number of viable cells

Flag this Question

Question 212 pts

What contributes to antigenic shift in influenza viruses?

different virus subtypes

a segmented genome

worldwide distribution of the virus

ease of virus transmission

attachment spikes

Flag this Question

Question 222 pts

An example of a latent viral infection is

influenza.

mumps.

cold sores.

smallpox.

subacute sclerosing panencephalitis.

Flag this Question

Question 232 pts

An envelope is acquired during which of the following steps?

adsorption

biosynthesis

penetration

release

uncoating

Flag this Question

Question 242 pts

A clear area against a confluent “lawn” of bacteria is called a

cell lysis.

phage.

pock.

rash.

plaque.

Flag this Question

Question 252 pts

A viral species is a group of viruses that

cannot be defined.

has the same morphology and nucleic acid.

has the same genetic information and ecological niche.

infects the same cells and cause the same disease.

Flag this Question

Question 262 pts

The following steps occur during multiplication of herpesviruses. Which is the third step?

attachment

penetration

release

uncoating

biosynthesis

Flag this Question

Question 272 pts

Which of the following would be the first step in biosynthesis of a virus with a – (minus) strand of RNA?

synthesis of double-stranded RNA from a DNA template

synthesis of DNA from an RNA template

synthesis of DNA from a DNA template

synthesis of double-stranded RNA from an RNA template

transcription of mRNA from DNA

Flag this Question

Question 282 pts

A viroid is a(n)

infectious piece of RNA without a capsid.

infectious protein.

complete, infectious virus particle.

provirus.

capsid without nucleic acid.

Flag this Question

Question 292 pts

The following steps occur during multiplication of retroviruses. Which is the fourth step?

attachment

penetration

uncoating

synthesis of +RNA

synthesis of double-stranded DNA

Flag this Question

Question 302 pts

Lysogeny can result in all of the following EXCEPT

immunity to reinfection by any phage.

phage conversion.

immunity to reinfection by the same phage.

acquisition of new characteristics by the host cell.

specialized transduction.