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MCB 3020 EXAM 1 QUESTIONS AND ANSWERS
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MCB 3020 EXAM 1 QUESTIONS AND ANSWERS
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Name: Score:77 Multiple choice questions
Term 1 of 77
The sum total of all chemical reactions occurring in a cell is called
metabolism
entropy
energy
gluconeogenesis
Term 2 of 77
Which of the following is not true of viruses?
Reducing the total microbial population
Killing pathogenic microorganisms
Increasing the shelf life of the product
(All correct)
Viruses replicate by binary fission.
What is True:
-Viruses can exist in two phases: intracellular and extracellular.
-Viruses consist of one or more molecules of DNA or RNA enclosed in a coat of protein
and sometimes in other more complex layers.
-Viruses are acellular.
Nitrate
Carbon dioxide
Sulfate
(All correct)
reduction of carbon dioxide and incorporation into organic molecules that are
assimilated.
,Term 3 of 77
The process of forming a cross wall between two daughter cells is known as _______________.
fusion
budding
fission
septation
Term 4 of 77
The original differentiation of prokaryotes and eukaryotes was based on structures found in
prokaryotes that are lacking in eukaryotes.
True
False
Term 5 of 77
The Golgi apparatus is responsible for the
denaturing proteins.
sterilization
formation of mesosomes.
packaging of materials for excretion.
,Term 6 of 77
Which of the following is a function of pasteurization?
Carboxylation phase, reduction phase, regeneration phase
Reductive tricarboxylic pathway
Reducing the total microbial population
Killing pathogenic microorganisms
Increasing the shelf life of the product
(All correct)
the depletion of an essential nutrient.
a lack of available oxygen.
the accumulation of toxic waste products.
(all were correct)
Term 7 of 77
The membrane bound structure that contains the chromosomes of eukaryotes is called the
nucleus.
True
False
Term 8 of 77
Old cultures of bacteria that have lost their ability to cause disease are said to be
virulence
inactivated
attenuated
sterilization
, Term 9 of 77
The terms phototroph and chemotroph refer to an organism's source of
metabolism
water
entropy
energy
Term 10 of 77
Which of the following strategies enable non-acidophilic bacteria to endure lower pH
environments?
It can't be depended on to remove all viruses from liquids.
Synthesis of acid shock proteins that protect other cellular proteins
Presence of internal buffers
Proton pumps that pump H+ out of the cell
(All of the choices are correct.)
Viruses replicate by binary fission.
What is True:
-Viruses can exist in two phases: intracellular and extracellular.
-Viruses consist of one or more molecules of DNA or RNA enclosed in a coat of protein
and sometimes in other more complex layers.
-Viruses are acellular.
Nitrate
Carbon dioxide
Sulfate
(All correct)
Term 11 of 77
The Calvin Cycle functions to construct carbohydrates from carbon dioxide.
True
False
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