Q1.
Identify the basic amino acid from the following.
Q2.
The two functional groups characteristic of sugars are
Q3.
A typical fat molecule is made up of
Q4.
A phosphoglyceride is always made up of
Q5.
Uridine, present only in RNA is a
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Q6.
Which one out of A – D given below correctly represents the structural formula of the basic amino acid?
Q7.
The given diagrammatic representation shows one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component "X" in it.
Q8.
Which one of the following biomolecules is correctly characterized?
Q9.
Which one of the following structural formulae of two organic compounds is correctly identified along with its related function?
Q10.
About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and
Q11.
Which of the following is the simplest amino acid?
Q12.
The major role of minor elements inside living organisms is to act as
Q13.
Lipids are insoluble in water because lipid molecules are
Q14.
Spoilage of oil can be detected by which fatty acid?
Q15.
Essential amino acid is
Q16.
What are the most diverse molecules in the cell?
Q17.
The four elements that make up 99% of all elements found in a living system are
Q18.
Amino acids are mostly synthesised from
Q19.
Living cell contains 60 – 95% water. Water present in human body is
Q20.
Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their
Q22.
Which one of the following is the most abundant protein in the animals?
Q23.
Which of the following glucose transporters is insulin-dependent?
Q24.
Which one is the most abundant protein in the animal world?
Q25.
Which of the following have carbohydrate as prosthetic group?
Q26.
Which one of the following statements is wrong?
Q27.
The chitinous exoskeleton of arthropods is formed by the polymerisation of
Q28.
Which one of the following is a non - reducing carbohydrate?
Q29.
Macromolecule chitin is
Q30.
Carbohydrates are commonly found as starch in plants storage organs. Which of the following five properties of starch (1-5) make it useful as a storage material?
Q31.
Cellulose is the major component of cell walls of
Q32.
Carbohydrates, the most abundant biomolecule on earth, are produced by
Q33.
Which of the following is a reducing sugar?
Q34.
Cellulose, the most important constituent of plant cell wall is made up of
Q35.
Lactose is composed of
Q36.
In which of the following groups are all polysaccharides?
Q37.
Glycogen is a polymer of
Q38.
Which of the following are not polymeric?
Q39.
Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by
Q40.
Which purine base is found in RNA?
Q41.
Which of the following nucleotide sequences contains 4 pyrimidine bases?
Q42.
In RNA, thymine is replaced by
Q44.
A nucleotide is formed of
Q45.
DNA is composed of repeating units of
Q46.
The basic unit of nucleic acid is
Q47.
RNA does not possess
Q48.
"Ramachandran plot" is used to confirm the structure of
Q49.
Which of the following is the least likely to be involved in stabilising the three-dimensional folding of most proteins?
Q50.
The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A-D. Which one of the following options is correct?
Q51.
Identify the substances having glycosidic bond and peptide bond, respectively in their structure.
Q52.
Which of the following biomolecules does have a phosphodiester bond?
Q53.
Which is wrong about nucleic acids?
Q54.
A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is
Q55.
Which is not consistent with double helical structure of DNA?
Q56.
In double helix of DNA, the two DNA strands are
Q58.
Match the following.
Q59.
Consider the following statements.
(A) Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group.
(B) A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme.
Select the correct option.
Q60.
Prosthetic groups differ from co-enzymes in that
Q61.
Which of the following statements is correct with reference to enzymes?
Q62.
A non-proteinaceous enzyme is
Q63.
Which of the following describes the given graph correctly?
Q64.
Which one of the following statements is incorrect?
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Q65.
Select the option which is not correct with respect to enzyme action.
Q66.
Transition state structure of the substrate formed during an enzymatic reaction is
Q67.
The essential chemical components of many coenzymes are
Q68.
Which of the following statements about enzymes is wrong?
Q69.
The curve given below shows enzymatic activity in relation to three conditions (pH, temperature and substrate concentration). What do the two axes (X and Y) represent?
Q70.
Three of the following statements about enzymes are correct and one is wrong. Which one is wrong?
Q71.
The figure given below shows the conversion of a substrate into product by an enzyme. In which one of the four options (A-D) the components of reaction labelled as A, B, C and D are identified correctly?
Q72.
A competitive inhibitor of succinic dehydrogenase is
Q73.
Modern detergents contain enzyme preparations of
Q74.
An organic substance bound to an enzyme and essential for its activity is called
Q75.
The catalytic efficiency of two different enzymes can be compared by the
Q76.
Which one of the following statements regarding enzyme inhibition is correct?
Q77.
Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these
Q78.
In which one of the following enzymes, is copper necessarily associated as an activator?
Q79.
Role of an enzyme in reactions is to/as
Q80.
Which factor is responsible for inhibition of enzymatic process during feedback?
Q81.
Enzymes are not found in
Q82.
Co-factor (prosthetic group) is a part of holoenzyme. It is
Q83.
Which is a typical example of 'feedback inhibition'?
Q84.
Enzymes having slightly different molecular structure but performing identical activity are