The central dogma of molecular genetics states that the genetic information flows from______.

(a)

Amino acids Protein DNA

(b)

DNA Carbohydrates Proteins

(c)

DNA RNA Proteins

(d)

DNA RNA Carbohydrates

Among the following the achiral amino acid is ______.

(a)

2-ethylalanine

(b)

2-methylglycine

(c)

2-hydroxymethylserine

(d)

Tryptophan

Which one of the following is not produced by body?

(a)

DNA

(b)

Enzymes

(c)

Hormones

(d)

Vitamins

The number of sp² and sp³ hybridised carbon in fructose are respectively ______.

(a)

1 and 4

(b)

4 and 2

(c)

5 and 1

(d)

1 and 5

The pyrimidine bases present in DNA are ______.

(a)

Cytosine and Adenine

(b)

Cytosine and Guanine

(c)

Cytosine and Thiamine

(d)

Cytosine and Uracil

Complete hydrolysis of cellulose gives ______.

(a)

L-Glucose

(b)

D-Fructose

(c)

D-Ribose

(d)

D-Glucose

Which of the following statement is correct?

(a)

Ovalbumin is a simple food reserve in egg-white

(b)

Blood proteins thrombin and fibrinogen are involved in blood clotting

(c)

Denaturation makes protein more active

(d)

Insulin maintains the sugar level of in the human body

Which of the following are epimers?

(a)

D(+)-Glucose and D(+)-Galactose

(b)

D(+)-Glucose and D(+)-Mannose

(c)

Neither (a) nor (b)

(d)

Both (a) and (b)

Which is a monosaccharide among the following?

(a)

Sucrose

(b)

Cellulose

(c)

Maltose

(d)

Glucose

The building block of proteins are

(a)

α - hydroxy acids

(b)

α-amino acids

(c)

β-hydroxy acids

(d)

β-amino acids

Specificity of enzyme is due to

(a)

the sequence of amino acids

(b)

secondary structure

(c)

tertiary structure

(d)

all of the above

Starch when heated with enzyme diastase yields

(a)

glucose

(b)

sucrose

(c)

maltose

(d)

glycogen

Pick out the odd one.

(a)

Wax

(b)

Starch

(c)

Glucose

(d)

Fructose

Sugars that yield two to ten monosaccharide molecules on hydrolysis is

(a)

monosaccharides

(b)

disaccharides

(c)

oligosaccharides

(d)

polysaccharides

Fructose is not oxidised by bromine water indicates

(a)

the presence of aldehydic group

(b)

presence of ketonic group

(c)

absence of aldehydic group

(d)

absence of ketonic group

Give the differences between primary and secondary structure of proteins.

Write the Zwitter ion structure of alanine

Write a short note on peptide bond.

List the expected products of hydrolysis of lactose.

What are anomers? Give example.

How is fructose prepared from inulin?

Why are polysaccharides called non-sugars?

Why cellulose is not used as food by humans?

Give the uses of cellulose.

Write a note on rRNA.

Give two difference between Hormones and vitamins.

What are reducing and non – reducing sugars?

Classify the following into monosaccharides, oligosaccharides and polysaccharides.
i) Starch
ii) fructose
iii) sucrose
iv) lactose
iv) maltose

Explain the reaction which indicates the presence of ketonic group in fructose.

Write the product formed when HCN reacts with glucose.

Complete the following reaction.
(i) Glucose + acetic anhydride ➝ _______?_______
(ii) What does the above reaction suggest?

ExpIain the classification of proteins based on their structure.

Amino acids are amphoteric in nature. Explain.

Give the structure of sucrose.

Write the monomers of the following sugars and explain how they are linked.
(i) Sucrose
(ii) Maltose
(iii) Lactose

Write the structure of all possible dipeptides which can be obtained form glycine and alanine

What are different types of RNA which are found in cell

Is the following sugar, D – sugar or L – sugar?

Give the uses of carbohydrates.

Define the following terms as related to proteins
(i) Primary structure
(ii) Secondary structure
(iii) β strands

List the importance of proteins in biological processes.

Show the formation of a peptide bond with an equation.