Biomolecules · Chemistry · TS EAMCET
MCQ (Single Correct Answer)
Amino acid ' $X$ ' contains phenolic hydroxy group and amino acid ' $Y$ ' contains amide group. ' $X$ ' and ' $Y$ ' respectively are
The general structure of alpha amino acid can be represented as
Which amino acid is not correctly matched with $R$ given?
Maltose on hydrolysis gives two monosaccharide units. The incorrect statement about the monosaccharides formed is
The source of an enzyme is malt and that enzyme converts $X$ into $Y . X$ and $Y$ respectively are
On prolonged heating with HI , glucose gives a compound ' $C$ ' which can be obtained by Wurtz reaction using sodium metal and compound ' $D$ ' . Identify ' $D$ '
A carbohydrate $(A)$, when treated with dilute HCl in alcoholic solution gives two isomers $(B)$ and $(C)$. $B$ on reaction with bromine water gives a monocarboxylic acid ' $Z$ ' and ' $C$ ' is a ketohexose. What is $A$ ?
Which of the following hormones is an example of polypeptide?
What is the IUPAC name of the product $Y$ in the given reaction sequence?
Two statements are given below :
I. Milk sugar is disaccharide of $\alpha$-D-galactose and $\beta$-D-glucose
II. Sucrose is disaccharide of $\alpha$-D-glucose and $\beta$-D-fructose
From the following, the correct statements about polysaccharides are
I. Starch is a polymer of $\alpha-\mathrm{D}(+)$-glucose.
II. Amylose component of starch is not soluble in water.
III. Amylose is a branched chain polymer of $\alpha-\mathrm{D}(+)$-glucose.
IV. Cellulose is a straight chain polymer of $\beta-\mathrm{D}(+)$-glucose units.
The deficiency of which vitamin causes pernicious anaemia?
A vitamin $X$ is soluble in fat and its source is egg yolk. Deficiency of $X$ causes the disease
$$ \text { The Haworth projection shown below represents } $$
The functional group present in asparagine, a non-essential amino acid, are
Assertion (A) In aqueous solution, amino acids exist in dipolar ion form.
Reason (R) Most of the naturally occurring amino acids have $L$-configuration.
The correct option among the following is
$$ \text { Consider the following structures } $$
Which of the pairs represent $D$ and $L$-fructose, respectively?
Assertion (A) Both glucose and fructose have the same $D$-configuration.
Reason (R) Both glucose and fructose are dextrorotatory.
The correct option among the following is
The amount of sucrose needed to produce 1 mole of glucose using acid hydrolysis is
Assertion (A) The denaturation of proteins can destroy all $1^{\circ}, 2^{\circ}$ and $3^{\circ}$ protein structures.
Reason (R) Curdling of milk is due to denaturation of proteins.
The correct option among the following is
- Which of the following statements support the cyclic form for glucose?
(i) It doesn't give Schiff's test.
(ii) It is found to exist in two different crystalline forms.
(iii) It oxidises with nitric acid to give saccharic acid.
(iv) Pentaacetate of glucose doesn't react with hydroxylamine.
Considering the facts that
I. sucrose forms glycosidic linkage between $\mathrm{C}_1$ of glucose and $\mathrm{C}_2$ fructose, while
II. lactose forms glycosidic linkage between $\mathrm{C}_1$ of galactose and $\mathrm{C}_4$ of glucose.
Choose the correct statement.
Xerophthalmia disease is caused by the deficiency of
Which of the following are reducing sugars?
I. Sucrose
III. Lactose
II. Ribose
IV. Fructose
$$ \text { Choose the correct Zwitter ionic form for aspartic acid. } $$
Amino acids containing heterocyclic ring are
(i) Histidine
(ii) Valine
(iii) Arginine
(iv) Proline