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Online Biochemistry Test - Biochemistry Test 2

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.
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  • 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.
Most of the important functional groups in biological molecules contain
oxygen and/or nitrogen and are acidic
oxygen and a phosphate
nitrogen and a phosphate
oxygen and/or nitrogen and are polar
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Learn more problems on : Water, pH and Macromolecules
2.
In a polypeptide average mass of an amino acid residue is
110 daltons
118 daltons
80 daltons
150 daltons
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Learn more problems on : Structure and Properties of Amino Acids
3.
What is the product of the catabolic breakdown of Arginine?
Alpha-ketoglutarate
Fumarate
Oxaloacetate
Succinate
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Learn more problems on : Structure and Properties of Amino Acids
4.
If the F and Y angles of each peptide unit in a protein are known, which of the following may also be determined?
Complete secondary structure
Complete tertiary structure
Complete quaternary structure
Thermodynamic stability
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Learn more problems on : Structure and Properties of Peptides
5.
Which of the following forces is the most unfavorable for protein folding?
Conformational entropy
Hydrophobic interactions
Vander Waals interactions
Electrostatic interactions
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Learn more problems on : Protein Stability
6.
A molecule that can be covalently linked to a non-immunogenic antigen to make it an immunogen is called a (n)
adjuvant
carrier
hapten
mitogen
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Learn more problems on : Antigen
7.
Each IgA antibody molecule consists of
four polypeptide chain and has two antigen binding site
two polypeptide chain and has one antigen binding site
three polypeptide chain and has two antigen binding site
two polypeptide chain and has two antigen binding site
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Learn more problems on : Anti Bodies
8.
The immune response to a booster vaccine is called a(n)
cellular response
innate response
primary response
secondary response
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Learn more problems on : Immune Response
9.
Immunogenicity
depends on the ability of the native antigen to be presented by MHC
is usually a property of self antigens such as eye tissue
is not a property of antibodies
is not a property of haptens
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Learn more problems on : Immune Response
10.
In cellular immunity, T lymphocytes are responsible for the recognition and killing of foreign invaders. The cells are
cytotoxic T lymphocytes (CTL)
killer T cells
both (a) and (b)
none of the above
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Learn more problems on : Immune Response
11.
DNA- footprinting is a suitable technique for identifying which of the following?
Particular mRNA in mixture
Particular t-RNA in mixture
Introns within DNA
Protein binding site within DNA
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Learn more problems on : Immunological Techniques
12.
A five carbon sugar lacking a hydrogen at the number 2 carbon is found in
DNA
RNA
mRNA
rDNA
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Learn more problems on : Nucleic Acids
13.
In order to insert a foreign gene into a plasmid, both must __________
have identical DNA sequences
originate from the same type of cell
be cut by the same restriction enzyme
be of the same length
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Learn more problems on : Recombinant DNA Technology
14.
Which of the following pair will produce complementary sticky ends?
Eco RI & MspI
Msp I & HPA II
Sau 3A & Bam HI
Mbo I & Sau 3A
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Learn more problems on : Recombinant DNA Technology
15.
To stop ATP synthesis which chemical is generally used?
DNSA
2,4 dinitrophenol
DDT
None of the chemical can stop ATP synthesis
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Learn more problems on : TCA Cycle
16.
Which of the following carbohydrate is effective in promoting the calcium absorption?
Lactose
Maltose
Sucrose
Xylose
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Learn more problems on : Minerals
17.
Headspace analysis is carried out in order to
analyse volatile compounds from solid or liquid samples
determine the psychological state of the tutor
analyse the column contents ahead of the sample
determine non-volatiles
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Learn more problems on : Gas Chromatography
18.
The size of a linear DNA fragment in a gel can be estimated by
fluorescence in UV light
the sedimentation coefficient
the time it takes the gel to run
comparison with a molecular weight standard such as Hind III digested phage lambda
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Learn more problems on : DNA Structure and Replication
19.
In DNA replication, one new strand is synthesized complementary to an old (parent) strand and is referred as
mutational
semiconservative
discontinuous
antiparallel
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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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