Biomolecules

Which of the following represents the correct structure of $\beta-D-(-)$ - fructofuranose?

Which of the following statement is not correct for glucose?

Which of the following do not reduce Tollen's reagent?
(A) Fructose
(B) Sucrose
(C) Lactose
(D) Cellulose

Consider the following
Statement-I Lysine, arginine are essential and basic amino acids.
Statement-II Leucine, phenylalanine are non essential and neutral amino acids.
Correct answer is

\(\text { Which of the following represents nucleoside of RNA? }\)

Which of the following enzymatic reaction is not correctly matched with enzyme shown against it in brackets?

Identify the essential amino acids from the following
I. Leucine
II. Tyrosine
III. Cysteine
IV. Histidine

\(\text { Match the following }\)


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The list given below contains essential amino acids that are basic $(X)$ and also non essential amino acids that are neutral $(Y) . X$ and $Y$, respectively are
I. Lysine
II. Alanine
III. Serine
IV. Arginine
V. Tyrosine

Consider the following
Statement-I Primary structure of protein represents its constitution.
Statement-II $\alpha$-Helix and $\beta$-pleated sheet structure of protein represent tertiary structure of it.
Correct answer is

The deficiency of vitamin $(X)$ causes convulsions. Source of $X$ is $Y$. What are $X$ and $Y$ ?

Consider the following
Statement-I : Cane sugar is a disaccharide of $\alpha$-D-glucose and $\beta$-D-fructose.
Statement-II : Milk sugar is a disaccharide of $\alpha$-D-glucose and $\beta$-D-galactose.
The correct answer is

Identify the set containing purine and pyrimidine base of DNA respectively.

Which of the following contain $\alpha$-D-glucose units?
I. Cane sugar
II. Milk sugar
III. Cellulose
IV. Amylose

\(\text { Match the following. }\)
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Consider the following.
Statement I : Lactose is composed of $\alpha$ - $D$-glucose and $\beta$-D-glucose.
Statement II : Lactose is a reducing sugar.

The structure of the nitrogen containing heterocyclic base given below represents

Observe the following reactions
I. Sucrose $(a q)+\mathrm{H}_2 \mathrm{O} \xrightarrow{x}$ glucose + fructose
II. Glucose $(a q) \xrightarrow{y}$ ethanol $+\mathrm{CO}_2$
What are $x$ and $y$ respectively?

The incorrect statement about amylose is

The improper functioning of ' $X$ ' results in Addison's disease. Hormone ' $Y$ ' is responsible for the development of secondary female characteristics. ' $X$ ' and ' $Y$ ' are respectively

Which of the following act as intracellular messengers?

The deficiency of vitamin $(x)$ causes beri beri and deficiency of vitamin $(y)$ causes convulsions.
What are $x$ and $y$ respectively?

Which of the following molecules contain sulphur atom in their structures?
I. Morphine
II. Heroin
III, Penicillin
IV. Terpineol
V. Cimetidine

Which one of the following is NOT a disaccharide?

Which of the following is not an essential amino acid ?

\(\text { Match List-I with List-II }\)


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The number of -OH groups in open chain and ring structures of D-glucose are respectively

Carrot and curd are sources for the vitamins repectively.

Which of the following structure of proteins represellis its constitution?

Given below are two statements.
I. Cytosine and guanine are formed in equal quantities in DNA hydrolysis.
II. Adenine and uracil are formed in equal quantities in RNA hydrolysis.
The correct answer is

Identify the correctly matched set from the following.

The number of essential and non-essential amino acids from the following list respectively is
Val, Gly, Leu, Lys, Pro, Ser

Which of the following represents simplified version of nucleoside?

Identify the amino acid which has

The carbohydrate which does not react with ammonical $\mathrm{AgNO}_3$ solution is

Which of the following is an essential amino acid ?

Which of the following hormone is responsible for preparing uterus for implantation of fertilised eggs?

\(\text { The structure of Gly-Ala is }\)

Given below are two statements
Assertion (A) Hydrolysis of DNA does not form equal number of $A$ and $T, G$ and $C$.
Reason (R) In DNA, adenine forms hydrogen bonds with thymine and cytosine forms hydrogen bonds with guanine.
The correct an...

In nucleoside, the base is attached to which position of sugar molecule?

Glycylalanine is a dipeptide of which amino acids?

Carbohydrates are stored in plants and animals in which of the following forms respectively?

Match the following

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Which of the following molecules is eliminated during peptide bond formation?

Which hormone tends to increase the blood glucose level in human?

Pernicious anemia is caused due to deficiency of which vitamin ?

Which of the following vitamins cannot be stored in the body?

Vitamin-B\(_1\) is

The human body does not produce

During the action of enzyme ‘zymase’
glucose is converted into .............., with the
liberation of carbon dioxide gas.