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The following diagram illustrates a common food test:

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Identify the substance 'X'

Important Questions on Biological Molecules

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Biology>Biochemistry P1>Biological Molecules>Proteins
If the acidic, basic and hydrophobic residues of proteins are considered to be red, green and blue in colour, respectively, then a globular protein in aqueous solution would have
EASY
Biology>Biochemistry P1>Biological Molecules>Proteins
Which ONE of the following is likely to occur upon heating a solution of eukaryotic protein from 20°C to 95°C?
EASY
Biology>Biochemistry P1>Biological Molecules>Proteins
Amino acid analysis of two globular protein samples yielded identical composition per mole. Which one of the following characteristics is necessarily identical for the two proteins?
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Biology>Biochemistry P1>Biological Molecules>Proteins
Which one of the following amino acids is least likely to be in the core of a protein?
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Biology>Biochemistry P1>Biological Molecules>Proteins
Which one of the pairs of amino acids contains two chiral centres?
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Biology>Biochemistry P1>Biological Molecules>Proteins
Among the following, identify the zwitterionic form
MEDIUM
Biology>Biochemistry P1>Biological Molecules>Proteins
In primary structure of protein, the protein thread showed helix with four amino acids S-C-Y-E and a naphthalene structure in amino acid Y. In such condition what will be the direction of helix and what are the positions of amino acids
EASY
Biology>Biochemistry P1>Biological Molecules>Proteins
Which one of the following is the most abundant protein in the animals?
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Biology>Biochemistry P1>Biological Molecules>Proteins
Which one of the following is referred to as 'living fossils'?
MEDIUM
Biology>Biochemistry P1>Biological Molecules>Proteins
A polymer has only one type of building block called monomer repeated 'n' number of times. A heteropolymer has more than one type of monomer. Proteins are heteropolymers made of amino acids. If a nucleic acid, like DNA or RNA, is made of only 4 types of nucleotide monomers, proteins are made of:
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Biology>Biochemistry P1>Biological Molecules>Proteins

Choose the most abundant protein present in the animal world.

MEDIUM
Biology>Biochemistry P1>Biological Molecules>Proteins
Point out the incorrect statement regarding proteins.
MEDIUM
Biology>Biochemistry P1>Biological Molecules>Proteins
Which of the following statements is correct for biomolecules?
MEDIUM
Biology>Biochemistry P1>Biological Molecules>Proteins
Choose the correct statement.
EASY
Biology>Biochemistry P1>Biological Molecules>Proteins
_____ is known as imino acid.
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Biology>Biochemistry P1>Biological Molecules>Proteins
Insulin is a protein which plays the role of
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Biology>Biochemistry P1>Biological Molecules>Proteins
The linear sequence of amino acids is referred to be the  _____ structure of protein.
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Biology>Biochemistry P1>Biological Molecules>Proteins
The derived amino acids are also known as _____ amino acids.
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Biology>Biochemistry P1>Biological Molecules>Proteins

As the age advances, there is a gradual thinning of hair in human males. This is mainly because of lowered

EASY
Biology>Biochemistry P1>Biological Molecules>Proteins
Which one of the following is a conjugate protein