Biomolecules practice · Mixed difficulty

What provides roughage (fibre) in our diet?

Every chemical (metabolic) reaction is a … reaction

How many of the given statements are correct?

A. Water is the most abundant chemical in the living organisms.

B. A protein is a heteropolymer and not a homopolymer.

C. In polysaccharide,left end is called reducing end & right end is called non-reducing end.

D. A nucleoside is the building block of nucleic acids, which consist of a heterocyclic compound, a
monosaccharide and a phosphate.

Enzymes catalyses the biochemical reactions by …… the activation energy

The acid soluble pool, roughly represents

Arachidonic acid is

Assertion: Starch forms complex with ${I_2}$.
Reason: Starch forms secondary helical structure

Assertion: Chitin is homopolymer
Reason: Chitin is made up of only one type of monomer i.e.
N-acetylglucosamine.

Assertion: In polysaccharide chain the right end is reducing
Reason: The right end contain free anomeric -OH group

Which of the following type of biomolecules upon ionization from zwitter ions?

Denaturation of DNA is accompanied by the following changes except:

In gluconeogenesis, which of the following cannot acts as substrate

Which of the following secondary metabolites are used as drugs?

Amino acids are mostly synthesized from?

In a protein molecule, the amino acid units are linked together by ……... bonds formed between the amino group and the carboxyl group of successive amino acids

The proteinaceous molecule that joins a non – protein prosthetic group to form a functional enzyme, is called?

After grinding a living tissue in trichloroacetic acid and then straining it, you would obtain two fractions : acid soluble pool and acid insoluble fraction. Acid insoluble fraction does not contains

The free energy of a system, in a spontaneous reaction

Which of the following biomolecule is obtained by adding phosphate group to a nucleoside?

Alkaloids; Flavonoids; Rubber; Essential oils;
antibiotics; coloured pigments; scents; Gums ; Spices
How many of the above are primary metabolites

Select the false statement I. Living process is a constant effort to prevent falling into equilibrium II. Energy can enter and leave a cell III. Matter can enter and leave a cell IV. Metabolic pathways are interlinked

All of the following are aromatic amino acids, except

Assertion (A): Biomolecules which are found in the acid insoluble fraction are consider as macromolecules.

Reason (R): Biomolecules found in acid insoluble fraction have molecular weight more than 1000 Dalton.

Pentoses and hexoses are common

The tertiary structure of the proteins containing amino acid cysteine is achieved through

Inhibin is composed of

Select the incorrect match w.r.t secondary metabolites

Which of the following statements are correct for polysaccharides?
I. The polysaccharides are found as a part of the acid insoluble pellet
II. These are long chains of sugars
III. They are threads containing different monosaccharides as building blocks
IV. Cellulose is a polymeric polysaccharide consisting of only one type of monosaccharide i.e., fructose

Name the most abundant protein in animal world

Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these