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Protein Structure

Description: Get complete study material covers Notes and Test papers for Biochemistry,Protein Structure, Amino Acids
Number of Questions: 24
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Tags: Biochemistry Protein Structure Amino Acids Bio-informatics/Bio-chemistry
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Sulphur content of protein is

  1. 50-55%

  2. 0-4%

  3. 6-7.3%

  4. 19-24%


Correct Option: B

The structures of L- and D-aminoacids are written based on the configuration of

  1. L-glucose

  2. D-glucose

  3. D&L-glyceraldehyde

  4. None of these


Correct Option: C

Which of the following amino acids is a nonpolar amino acid?

  1. Methionine

  2. Alanine

  3. Tryptophan

  4. All of the above


Correct Option: D

Disulfide special group is present in which of the following amino acids?

  1. Arginine

  2. Threonine

  3. Cystine

  4. Asparagine


Correct Option: C

The content of nitrogen, an essential component of proteins, on an average is

  1. 12%

  2. 15%

  3. 16%

  4. 10%


Correct Option: C

Which of the following amino acids are found in brain tissue?

  1. D-serine

  2. D-aspartate

  3. D-alanine

  4. Both (1) and (2)


Correct Option: D

Which of the following amino acids gives Hopkins Cole colour reaction?

  1. Glycine

  2. Serine

  3. Tryptophan

  4. Histidine


Correct Option: C

Which of following amino acids are non protein amino acids?

  1. Homoserine

  2. Homocysteine

  3. Ornithine

  4. All of the above


Correct Option: D

Tyrosine gives colour in which of following reactions?

  1. Xanthoproteic reaction

  2. Milons reaction

  3. Folin coicalteau's test

  4. All of the above


Correct Option: D

The reaction given by two or more peptide linkages is

  1. Biuret test

  2. Ninhydrin test

  3. Xanthoproteic test

  4. Pauley's test


Correct Option: A

Isoelectric pH of leucine is

  1. 5

  2. 5.2

  3. 5.8

  4. 6.0


Correct Option: D

Which of following amino acids have imino group instead of amino group?

  1. Proline

  2. Histidine

  3. Glycine

  4. Isoleucine


Correct Option: A

Which of the following is a branched chain aminoacid?

  1. Valine

  2. Leucine

  3. Isoleucine

  4. All of above


Correct Option: D

One letter symbol for asparagine and glutamine respectively is

  1. N, Q

  2. D, E

  3. C, M

  4. Q, E


Correct Option: A

Which of the following amino acids was found in 2002?

  1. Lysine

  2. Hydroxyproline

  3. Pyrrolysine

  4. Alanine


Correct Option: C

Which of following amino acids is bitter in taste?

  1. Isoleucine

  2. Alanine

  3. Valine

  4. Lysine


Correct Option: A

Thioether group is present in which of following amino acids?

  1. Methionine

  2. Asparagine

  3. Lysine

  4. Tyrosine


Correct Option: A

Which of following amino acids give yellow colour with ninhydrin?

  1. Proline

  2. Hydroxyproline

  3. Pyrrolysine

  4. Both (1) and (2)


Correct Option: D

Which of the following amino acids is incorporated into protein by codon namely UGA?

  1. Cysteine

  2. Cystine

  3. Selenocysteine

  4. Alanine


Correct Option: C

Which of the following amino acids is coded by UAG?

  1. Methionine

  2. Lysine

  3. Pyrrolysine

  4. Glutamine


Correct Option: C

Which of the following amino acids are found in bacterial cell wall?

  1. D-glutamic acid

  2. D-serine

  3. D-alanine

  4. None of these


Correct Option: A

Which of the following is an essential amino acid?

  1. Tryptophan

  2. Isoleucine

  3. Phenylalanine

  4. All of the above


Correct Option: D

The charged molecule which is electrically neutral is known as

  1. molecule

  2. atom

  3. proton

  4. atom and element


Correct Option: A
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