Biomolecules practice · Medium

The number of hydrogen bonds present between guanine and cytosine are:

Degree of unsaturation in oils and fats is measured in terms of:

During reduction of sugar through fehling's solution, ionic state of metal changes from

Which of the following is polymerized to form proteins?

The enzyme which decomposes urea into ammonia and carbon dioxide is called

In nucleic acid, corresponding nucleotides are linked together by -

Which of the following statement(s) is/are false about carbohydrates?

I. It has general formula, $\mathrm{C}_x\left(\mathrm{H}_2 \mathrm{O}\right)_y$.

II. They are hydrates of carbon.

III. The molecular formula of glucose is $\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6$ and general formula is $\mathrm{C}_6\left(\mathrm{H}_2 \mathrm{O}\right)_6$.

Choose the correct option.

Bases common to DNA and RNA are:

Which of the following hormones is excreted from adrenal cortex?

Select the biomolecule(s) that help during the formation of the living system.

The number of disulphide linkage present in insulin are

On what basis, do the fibrous and globular proteins are classified?

In fibrous proteins, polypeptide chains are held together by

Which of the following nucleotide sequences contains 4 pyrimidine bases?

Consider the following polypeptide.
$Gly - Ala - Val - Gly - Leu - Ile - Asp - Gly$
After hydrolysis the number of different optically active amino acids obtained are ${x}$ and different optically inactive amino acids are $y$ then find $\frac{x}{y}$:

Cofactors (non-proteinic prosthetic groups) used to bond conjugated proteins are:

Select the base which is not common between DNA and RNA

Which of the following terms indicates to the arrangement of different protein subunits in a multiprotein complex?

Which of the following is proteolytic enzyme?

A good example of an unsaturated acid got by the hydrolysis of an oil is:

Name the constituents and type of linkage present in $\alpha$-maltose.

Consider the following statements regarding vitamins.

I. Vitamins are the organic compounds required in small amounts in the diet but their deficiency causes specific disease.

II. Vitamins cannot be synthesised by plant but our body can synthesise them.

III. Vitamins are necessary to perform the specific biological functions for the normal maintenance of optimum growth and health of the organism.

Select the false statement about the vitamins and choose the correct option.

The correct, observation in the following reactions, is
$\mathrm{Sucrose}\xrightarrow[{\mathrm{Cleavage}\,\mathrm{(Hydrolysis)}}]{{\mathrm{Glycosidic}\,\mathrm{bond}}}A + B\xrightarrow[{\mathrm{reagent}}]{{\mathrm{Seliwanoffs}}}$

If specific rotation of glucose solution is $52^\circ$ and that of fructose solution is $-92^\circ$ then what will be the specific rotation of invert sugar?

Consider the following statements.

(i) Nucleic acids are long chain polymers of nucleotides.

(ii) Sugar moiety in DNA molecules is $\beta$-D-ribose whereas in RNA molecules it is $\beta$-D-2-deoxyribose.

(ii) RNA contains four bases viz. adenine (A), guanine (G), cytosine (C) and uracil (U)

(iv) Nucleotide is a nucleoside linked to phosphoric acid at 4-position of sugar moiety.

Which of the following is the correct code for the statements above?

Glucose and fructose can be distinguished by

Assertion (A): DNA is responsible for maintaining the identity of different species of organisms over millions of years.
Reason (R): DNA molecule is capable of self duplication during cell division and identical DNA strands are transferred to daughter cell.

PUFA's principal role is

Which one of the following hormones contains iodine?

Assertion (A) Glucose gives reddish brown precipitate with Fehling solution.

Reason (R) Reaction of glucose with Fehling solution gives $\mathrm{CuO}$ and gluconic acid.