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WorksheetsMICROBIAL METABOLISM & NUTRITION
Total questions: 21
Worksheet time: 12mins
Name
Class
Date
1.
Another term for biosynthesis
a)
catabolism
b)
anabolism
c)
metabolism
d)
catalyst
2.
Catabolism is a form of metabolism in which _________ molecules are converted into __________ molecules.
a)
large, small
b)
small, large
c)
amino acid, protein
d)
food, storage
3.
An enzyme _______ the activation energy required for a chemical reaction.
a)
increases
b)
converts
c)
lowers
d)
catalyzes
4.
Energy is carried from catabolic to anabolic reactions in the form of __________.
a)
ADP
b)
high-energy ATP bonds
c)
coenzymes
d)
inorganic phosphate
5.
Exergonic reactions
a)
release potential energy
b)
consume energy
c)
form bonds
d)
occur only outside the cell
6.
Energy coupling is defined as
I Transfer of product from anabolism to catabolism
II Free energy from ADP phosphorylases is functionally linked to produce product
III Transfer of energy from catabolism to anabolism
IV Free energy from ATP hydrolysis is coupled or functionally linked to the energy needs of another chemical reaction
I Transfer of product from anabolism to catabolism
II Free energy from ADP phosphorylases is functionally linked to produce product
III Transfer of energy from catabolism to anabolism
IV Free energy from ATP hydrolysis is coupled or functionally linked to the energy needs of another chemical reaction
a)
I and III
b)
II, III and IV
c)
I, III and IV
d)
III and IV
7.
Which statement is true?
a)
Simple molecules such glucose, protein, glycerol and fatty acids is derived from catabolic reactions.
b)
Anabolic reactions transfer energy from ATP to complex molecules release heat to produce simple molecules.
c)
Catabolic reactions transfer energy from complex molecules to ATP to produce simple molecules such as amino acids, glucose, glycerol and fatty acids.
d)
Complex molecules such as starch, proteins and lipids derived from catabolic reactions.
8.
How we can see the electron movement?
a)
Redox reaction
b)
Oxidation only
c)
Reduction only
d)
None of the above
9.
Most coenzymes are
a)
metals
b)
vitamins
c)
proteins
d)
substrates
10.
What is the form of energy that been stored in the nutrients?
a)
protons
b)
electrons
c)
protons and electrons
d)
none of the above
11.
What is the final electron acceptor for clostridium sp. ?
a)
oxygen
b)
carbon dioxide
c)
inorganic compound
d)
organic compound
12.
What is the organic compound that acts as an electron carriers during Oxidative Phosphorylation?
a)
NAD+ and FAD
b)
ATP
c)
Proton
d)
None of the above
13.
Which parts of prokaryotes that Oxidative Phosphorylation occurs?
a)
Mitochondria
b)
Plasma Membrane
c)
Golgi apparatus
d)
Nucleus
14.
What are the carbon sources for the fermentative Streptococcus sp.?
a)
Chemoheterotrophs
b)
Chemoautotrophs
c)
Photoheterotrophs
d)
Photoheterotrophs
15.
The part of the enzyme where the substrate binds is called?
a)
active site
b)
catalyst
c)
inhibitor
d)
large subunit
16.
Which group of organic compounds includes the enzymes?
a)
proteins
b)
starches
c)
carbohydrates
d)
lipids
17.
The "lock and key hypothesis" attempts to explain the mechanism of
a)
vacuole formation
b)
pinocytosis
c)
sharing of electrons
d)
enzyme specificity
18.
Any substance that is acted upon by an enzyme is called
a)
coenzyme
b)
substrate
c)
vitamin
d)
cofactor
19.
An enzyme that hydrolyzes protein will not act upon starch. This fact is an indication that enzymes are
a)
hydrolytic
b)
specific
c)
catalytic
d)
synthetic
20.
A substrate is
a)
The reactant that an enzyme acts on when it catalyzes a chemical reaction
b)
The product that an enzyme acts on when it catalyzes a chemical reaction
c)
Both of the answer above
d)
None of the above
21.
A catalyst is
a)
A substance that speeds up a chemical reaction, but is consumed in the process
b)
A substance that slows down a chemical reaction, without being consumed in the process
c)
A substance that speeds up a chemical reaction, without being consumed in the process
d)
A substance that slows down a chemical reaction, but is consumed in the process
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