NEET Zoology Biomolecules Class 11 Questions

Match List I with List II:

Name the class of enzyme that usually catalyze the following reaction : S – G + S# → S + S# – G Where, G → a group other than hydrogen S → a substrate S# → another substrate

Which one of the following enzymes contains ‘Haem’ as the prosthetic group?

Match List I with List II.

Lecithin, a small molecular weight organic compound found in living tissues, is an example of:

The cofactor of the enzyme carboxypeptidase is:

Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of:

Match List I with List II:

Regarding catalytic cycle of an enzyme action, select the correct sequential steps: A. Substrate enzyme complex formation. B. Free enzyme ready to bind with another substrate. C. Release of products. D. Chemical bonds of the substrate broken. E. Substrate binding to active site. Choose the correct answer from the options given below:

Given below are two statements: Statement I: A unit formed by the attachment of a base to 1' position of sugar is known as nucleoside. Statement II: When nucleoside is linked to phosphorous acid at 5'-position of sugar moiety, we get nucleotide. In the light of the above statements, choose the correct answer from the options given below:

Cellulose does not form blue colour with Iodine because

Melonate inhibits the growth of pathogenic bacteria by inhibiting the activity of

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:

Given below are two statements: Statement I: Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat. Statement II: When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor. In the light of the above statements, choose the correct answer from the options given below:

Read the following statements on lipids and find out correct set of statements: i. Lecithin found in the plasma membrane is a glycolipid ii. Saturated fatty acids possess one or more C = C bonds iii. Gingely oil has lower melting point, hence remains as oil in winter iv. Lipids are generally insoluble in water but soluble in some organic solvents v. When fatty acid is esterified with glycerol, monoglycerides are formed

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.

Which of the following are not secondary metabolites in plants?

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

Identify the incorrect pair.

If Adenine makes 30% of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it?

Following are the statements with reference to 'lipids'. (a) Lipids having only single bonds are called unsaturated fatty acids. (b) Lecithin is a phospholipid. (c) Trihydroxy propane is glycerol. (d) Palmitic acid has 20 carbon atoms including carboxyl carbon. (e) Arachidonic acid has 16 carbon atoms. Choose the correct answer from the options given below.

Which of the following is a basic amino acid?

Identify the basic amino acid from the following.

Match the following:

Which of the following statements is correct?

Identify the substances having glycosidic bond and peptide bond, respectively in their structure:

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

Purines found both in DNA and RNA are:

Concanavalin A is:

Which of the following factors is responsible for the formation of concentrated urine?

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to:

Consider the following statements: i. Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group. ii. A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme. Select the correct option.

The two functional groups characteristic of sugars are

Conversion of milk to curd improves its nutritional value by increasing the amount of

Which of the following statements is NOT CORRECT?

Which one of the following statements is CORRECT with reference to enzymes?

Which of the following are NOT polymeric?

The CORRECT statement regarding RNA and DNA, is

Which one of the following statements is WRONG?

Which one of the following statements is INCORRECT?

Which one of the following is a non-reducing carbohydrate?

Select the option which is NOT correct with respect to enzyme action.

The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled I⁻IV. Which one of the following option is correct?

Which of the following best illustrates FEEDBACK in development?

Which of the following elements is a constituent of biotin?

Uridine, present only in RNA is:

Which of the following statements about enzymes is wrong?