IndiaBIX

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.
Protein fluorescence arises primarily from which residue?
Arginine
Tryptophan
Tyrosine
Phenylalanine
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Structure and Properties of Amino Acids
2.
What is the end product of leucine metabolism?
Acetyl-CoA
Pyruvic acid
Oxaloacetic acid
Acetyl carnitine
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Structure and Properties of Amino Acids
3.
The E.coli pyruvic acid dehydrogenase complex is reported to
decatalyze the oxidation of pyruvic acid to acetyl Co A and CO2
Catalyze the oxidation of pyruvic acid to acetyl Co A and CO2
retard the reduction of pyruvic acid to acetyl Co A and CO2
Catalyze the reduction of pyruvic acid to acetyl Co A and CO2
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Enzymes
4.
The antibiotic penicillin is a small molecule that does not induce antibody formation. However, penicillin binds to serum proteins and forms a complex that in some people induces antibody formation resulting in an allergic reaction. Penicillin is therefore
an antigen
a hapten
an immunogen
both an antigen and a hapten
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Antigen
5.
What is the result of an abnormal response of the immune system to part of a person's own body?
Passive immunity
Cancer
An allergic response
An autoimmune disease
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Immune Response
6.
The plasma membrane is a selectively permeable barrier due to presence of specific transport
proteins
amino acids
carbohydrates
none of these
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Membrane Structure and Functions
7.
The enzyme that catalyzes the splitting of PIP2 into two molecules of inositol triphosphate (IP3) and diacylglycerol in cell signaling, is
phosphokinase C
phospholipase C
phosphodiesterase C
lipokinase
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Cell Signalling and Transduction
8.
Which of the following is incorrect?
In DNA double helix, two strands of the DNA are bound with each other with the bases
Adenine always pairs with thymine
Guanine always pairs with the cytosine
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : DNA Structure and Replication
9.
The site on a bacterial chromosome that marks the termination point for chromosome replication is called
ter
a stop codon.
a stem-loop
pau
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Protein Synthesis
10.
Processive synthesis is a characteristic feature of
all DNA polymerases.
DNA Pol III at a replication fork.
removal of RNA primers on Okasaki fragments.
DNA mismatch repair
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Protein Synthesis
11.
Bacteriophages are
cells in the blood that eat bacteria
a class of bacteria
bacterial viruses
none of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Polymerase Chain Reaction
12.
A common way that cells capture the energy released during the breakdown of large molecules is to add electrons to smaller, specialized molecules that can accept them. This process of electron acceptance is otherwise known as
biosynthesis
metabolism
reduction
catalysis
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Carbohydrate
13.
Hexokinase activity in glycolysis is inhibited by
glucose 6- phosphate
fructose 6-phosphate
fructose 1,6 biphosphate
phosphofructokinase
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Carbohydrate
14.
What is present in the stomach to prevent self-digestion?
Mucus
acid
Enzymes
hormones
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Carbohydrate
15.
The end product of glycolysis is pyruvate, which enters the citric acid cycle after being converted to
acetic acid
acetyl-CoA
acetaldehyde
none of these
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : TCA Cycle
16.
In the initial step of photosynthesis, sunlight energizes the electron pair of
adenosine triphosphate (ATP)
chlorophyll pigments
water
carbon dioxide
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Photosynthesis and Respiration
17.
Carbon fixation requires the expenditure of ATP molecules which is generated by
formation of glucose during the Calvin cycle
replenishment of chlorophyll
ETS (electron transfer system) during the light reactions
none of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Photosynthesis and Respiration
18.
Which of the following mineral deficiency may result into impaired growth and development, skin lesions and loss of appetite?
Zinc
Cobalt
Iron
Magnesium
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Minerals
19.
An eluotropic series
ranks solvents by their relative abilities to displace solutes from a given absorbent
ranks column packing material by their relative abilities to retain solutes on the column
is a measure of the solvent adsorption energy
none of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : HPLC
20.
Metabolic reactions that break down complex molecules into smaller compounds, thereby releasing usable energy for the cell, are best described as
biosynthetic
catabolic
catalytic
photosynthetic
Your Answer: Option
(Not Answered)
Correct Answer: Option
Discuss about this problem : Discuss in Forum
Learn more problems on : Carbohydrate
*** END OF THE TEST ***
Time Left: 00:29:56
Post your test result / feedback here:

Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers