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Online Biochemistry Test - Biochemistry Test - Random

Instruction:
  • This is a FREE online test. Beware of scammers who ask for money to attend this test.
  • Total number of questions: 20.
  • Time allotted: 30 minutes.
  • Each question carries 1 mark; there are no negative marks.
  • DO NOT refresh the page.
  • All the best!

Marks : 2/20

Total number of questions
20
Number of answered questions
0
Number of unanswered questions
20
Test Review : View answers and explanation for this test.
1.
A solution with pH = 5 is __________ than a solution with pH = 7.
2 times more basic
10 times more basic
10 times more acidic
100 times more acidic
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Learn more problems on : Water, pH and Macromolecules
2.
The reactions of molecules
are the reactions of the functional groups
are independent of the functional groups
require an enzyme in all cases
all of the above
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Learn more problems on : Water, pH and Macromolecules
3.
Which of the following is not the hydrophobic and aromatic amino acid?
Phenylalanine
Tyrosine
Tryptophan
None of these
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Learn more problems on : Structure and Properties of Amino Acids
4.
A pathogen can be a (n)
agent that causes a disease
virus
bacteria
All of these
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Learn more problems on : Antigen
5.
Cleavage of an IgG molecule by a specific protease can produce
an antigen-binding site and two constant regions
two heavy chain-light chain dimers
an inactive mixture of oligopeptides
two Fab fragments and one Fc fragment
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Learn more problems on : Anti Bodies
6.
Peptidoglycan is a complex consisting of
oligo-saccharide and protein
polysaccharide and protein
mono-saccharide and protein
aminoacid and carbohydrate
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Learn more problems on : Membrane Structure and Functions
7.
The movement of molecules across a membrane by passive transport does not require
an input of metabolic energy
internal energy
vibrational energy
none of these
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Learn more problems on : Membrane Structure and Functions
8.
Exocytosis is the secretion of proteins
out of the cell across the plasma membrane into the extracellular space
out of the cell across the plasma membrane into the intracellular space
is the uptake of macromolecules from the extracellular space into the cell across the plasma membrane
is the uptake of macromolecules from the intracellular space into the cell across the plasma membrane
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Learn more problems on : Membrane Structure and Functions
9.
Enzymes, responsible for unraveling short segments of DNA is
DNA polymerase
helicase
DNA ligase
primase
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Learn more problems on : DNA Structure and Replication
10.
Which of the following is not a necessary component of translation?
Anticodon
mRNA
Ligase
Amino acid
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Learn more problems on : Protein Synthesis
11.
Saliva contains all of the following except
hormones
amylase
bacteria-killing enzymes
antibodies
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Learn more problems on : Carbohydrate
12.
The conversion of pyruvate to oxaloacetate
requires biotin
involves the fixation of carbon dioxide
occurs in the mitochondria
all of the above
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Learn more problems on : Carbohydrate
13.
In the glycogen synthase reaction, the precursor to glycogen is
glucose-6-P
UTP-glucose
UDP-glucose
glucose-1-P
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Learn more problems on : Glycolysis
14.
Malate-asparatate shuttle operates in
lungs and liver
heart and liver
pancreas and liver
none of these
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Learn more problems on : TCA Cycle
15.
More ATP is manufactured during __________ than at any other time in all of cellular metabolism.
fermentation
glycolysis
the light reactions of photosynthesis
oxidative phosphorylation
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Learn more problems on : Photosynthesis and Respiration
16.
Which of the following will oscillate the fastest?
A large mass on a weak spring
A large mass on a stiff spring
A small mass on a stiff spring
A small mass on a weak spring
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Learn more problems on : Spectroscopy
17.
What does the retention factor, k', describe?
The distribution of an analyte between the stationary and the mobile phase
The migration rate of an analyte through a column
The velocity of the mobile phase
All of these
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Learn more problems on : Gas Chromatography
18.
Automated DNA sequencing uses the chain termination method
but with an oligonucleotide primer labeled with a fluorescent dye
but with a polynucleotide primer labeled with a fluorescent dye
with no primer
either (b) or (c)
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Learn more problems on : DNA Structure and Replication
19.
The melting of 40-45 bp at the oriC site of E. coli requires
DNA + ATP + HU
DNA + ATP + HU + DNAb
DNA+ ATP + HU + DNAb + DNAa
DNA + ATP + HU + DNAb + DNAa + Pol III holoenzyme
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Learn more problems on : DNA Structure and Replication
20.
Aldolases splits fructose 1,6 biphosphate into
glyceraldehyde 3- phosphate
glyceraldehyde 3- phosphate and dihydroxyacetone phosphate
dihydroxyacetone phosphate
none of the above
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Learn more problems on : Carbohydrate
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