Biomolecules PYQs

Alpha-helix is found in which level of protein structure?

Identify the correct statements about biomolecules. A. Lipids are generally water soluble. B. Proteins are polypeptides. C. Polysaccharides are long chains of sugars. D. Adenine and guanine are substituted pyrimidines. E. Almost all enzymes are proteins. Choose the correct answer from the options given below :

Which of the following statements are correct regarding amino acids? A. They are substituted methanes. B. Serine is an aromatic amino acid. C. Valine is a neutral amino acid. D. Lysine is an acidic amino acid. Choose the correct answer from the options given below:

Match List I with List II: Choose the correct answer from the options given below :

The following reaction depicts the activity of a particular class of enzymes: Identify the enzyme class 'E' from the following options:

Match List I with List II. Choose the correct answer from the options given below :

Match List I with List II. Choose the option with all correct matches.

Histones are enriched with -

The protein portion of an enzyme is called :

Given below are two statements: Statement I: A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid (N-terminal) Statement II: Adult human haemoglobin, consists of 4 subunits (two subunits of α type and two subunits of β type). In the light of the above statements, choose the correct answer from the options given below:

A dehydration reaction links two glucose molecules to produce maltose. If the formula for glucose is C₆H₁₂O₆, then what is the formula for maltose?

Match List-I with List-II. Choose the correct answer from the options given below:

The RBC deficiency disease is deficiency disease of:

Match the following: Choose the correct option from the following.

Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their:

Identify the basic amino acid from the following.

Which one of the following is the most abundant protein in the animals?

"Ramachandran plot" is used to confirm the structure of

Mad cow disease in cattle is caused by an organism which has :

The two functional groups characteristic of sugars are:

Which of the following statements is not correct?

The correct corresponding order of names of four aldoses with configuration given below respectively, is:

A non-proteinaceous enzyme is

Which of the following is least likely to be involved in stabilizing the three-dimensional folding of most proteins?

Transition state structure of the substrate formed during an enzymatic reaction is

A phosphoglyceride is always made up of

Macromolecule chitin is

The essential chemical components of many coenzymes are

Which one of the following biomolecules is correctly characterised?

Which one of the following pairs of chemical substances is correctly categorised?

For its activity, Carboxypeptidase requires:

Which of the following is not a fat soluble vitamin?

Which of the statements about "Denaturation" given below are correct? Statements: (a) Denaturation of proteins causes loss of secondary and tertiary structures of the protein. (b) Denaturation leads to the conversion of double strand of DNA into single strand. (c) Denaturation affects primary structure which gets distorted.

Three groups of baby mice were used in a growth experiment. (a) Kept on complete diet (b) Fed basal diet without nutrient to be tested (c) Basal diet + carotene by feeding carrots. Identify curves a, b and c.

An organic substance bound to an enzyme and essential for its activity is called: