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WorksheetsMICRO_LEC_004_METABOLISM & GENETICS
Total questions: 24
Worksheet time: 8mins
Name
Class
Date
1.
This pathway generates NADPH, which provides reducing power for biosynthetic reactions.
a)
Entner-Doudoroff pathway
b)
Phosphogluconate pathway
c)
EMP Gycolytic pathway
d)
None of the above
2.
They grow only under condition of high reducing intensity and for which oxygen is toxic.
a)
Facultative anaerobes
b)
Aerotolerant anaerobes
c)
Obligate anaerobes
d)
Obligate aerobes
3.
It is the major pathway in the conversion of glucose to pyruvate.
a)
Entner-Doudoroff pathway
b)
Phosphogluconate pathwaym
c)
EMP Gycolytic pathway
d)
None of the above
4.
True or False. Catabolism processes utilize the energy stored in ATP to synthesize and assemble the subunits of macromolecules that make up the cell.
a)
true
b)
false
5.
The synthesis of which of the following cell components is dependent on a template?
a)
Lipopolysaccharide
b)
Peptidoglycan
c)
Capsular polysaccharide
d)
Deoxyribonucleic acid
e)
Phospholipids
6.
The synthesis of which of the following cell components is determined entirely by enzyme specificities?
a)
DNA
b)
Ribosomal RNA
c)
Flagella
d)
Lipopolysaccharide
e)
Protein
7.
The steps leading to the synthesis of peptidoglycan occur in the cytoplasm, on the cytoplasmic membrane, and extracellularly. Which antibiotic inhibits an extracellular step in peptidoglycan biosynthesis?
a)
Cycloserine
b)
Rifampin
c)
Penicillin
d)
Bacitracin
e)
Streptomycin
8.
Amino acids are found in the protein, peptidoglycan, and capsule of bacteria. Which of the following amino acids is found only in peptidoglycan?
a)
l-Lysine
b)
Diaminopimelic acid
c)
d-Glutamate
d)
l-Alanine
e)
None of the above
9.
The ability to use compounds and ions other than oxygen as terminal oxidants in respiration is a widespread microbial trait. This capacity is called
a)
Photosynthesis
b)
Fermentation
c)
Anaerobic respiration
d)
Substrate phosphorylation
e)
Nitrogen fixation
10.
The primary route of carbon assimilation used by organisms that can use CO2 as a sole source of carbon is
a)
Hexose monophosphate shunt
b)
Entner-Doudoroff pathway
c)
Embden-Meyerhof pathway
d)
Glyoxylate cycle
e)
Calvin cycle
11.
The regulation of enzyme activity provides fine control of metabolic pathways. Which of the following regulatory mechanisms provides fine control of a biosynthetic pathway?
a)
Catabolite repression
b)
Induction
c)
Feedback inhibition
d)
Attenuation
e)
None of the above
12.
The biosynthetic origin of building blocks and coenzymes can be traced back to relatively few precursors called focal metabolites. Which of the following are focal metabolites?
a)
α-Ketoglutarate
b)
Oxaloacetate
c)
Phosphoenolpyruvate
d)
G6PD
e)
All of the above
13.
Which of these pathways gives a cell the potential to produce the most ATP?
a)
TCA cycle
b)
Pentose phosphate pathway
c)
Glycolysis
d)
Lactic acid fermentation
e)
Entner-Doudoroff pathway
14.
During the process of oxidative phosphorylation, the energy of the proton motive force is used to generate
a)
NADH
b)
ADP
c)
NADPH
d)
Acetyl CoA
e)
ATP
15.
In anabolism, energy used is for ATP synthesis.
a)
true
b)
false
16.
Transfer a 2-carbon fragment from a donor to an acceptable molecule
a)
Isomerase
b)
Transketolase
c)
Aldolase
d)
Kinase
17.
These organisms grow only under condition of high reducing intensity and for which oxygen is toxic
a)
Facultative anaerobe
b)
Obligate aerobe
c)
Aerotolerant anaerobes
d)
Obligate anaerobe
18.
These organisms have an absolute requirement for oxygen in order to grow
a)
Facultative anaerobe
b)
Obligate aerobe
c)
Aerotolerant anaerobes
d)
Obligate anaerobe
19.
These organisms grow best under lower oxygen tension(higher oxygen tensions may be inhibitory)
a)
Facultative anaerobe
b)
Obligate aerobe
c)
Microaerophilic organism
d)
Obligate anaerobe
20.
These organisms fix nitrogen symbiotically in the root nodules of leguminous plants
a)
K. pneumoniae
b)
Clostridia species
c)
Rhizobiaceae
d)
All of the above
21.
EMP glycolytic pathway is the major pathway in conversion of glucose to pyruvate.
a)
true
b)
false
22.
pentose phosphate pathway is mostly used by pseudomonas, alcaligenes and other bacteria that lacks glycolytic enzymes.
a)
true
b)
false
23.
RNA is the blueprint of the cell.
a)
true
b)
false
24.
DNA SYNTHESIS performed by DNA polymerase occurs only from 3’ to 5’ direction
a)
true
b)
false
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