Biomolecules Test

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Biomolecules Test - 81

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements is not true about enzyme inhibitors?

A
Inhibit the catalytic activity of the enzyme

B
Prevent the binding of substrate

C
Generally, a strong covalent bond is formed between an inhibitor and an enzymes

D
Inhibitors can becompetitive or non-competitive

Solution
Question 2
1 / -0

In which biomolecule is peptide bond likely to be found ?

A
Collagen

B
Chitin

C
Cellulose

D
Choline

Solution

Collagen is the body's most important building block and it makes up approximately 30% of the proteins in our bodies. It is the biomolecule in which peptide bond is likely to be found.It is the key structural protein that ensures the cohesion, elasticity and regeneration of all connective tissues, including skin, tendons, ligaments, cartilage and bones.
So the correct answer is 'Collagen'.
Question 3
1 / -0

The acid soluble pool represents roughly the cytoplasmic composition. Which of the following nutrient is most likely absent in it?

A
Lecithin

B
Adenosin

C
Calcium ions

D
Glucose
Solution
The acid soluble pool has those compounds which have molecular weights ranging from 18 to around 800 Dalton's approximately. It has only four types of organic compounds i.e., proteins, nucleic acids, polysaccharides and lipids.
Lecithin or phospholipid is present in a cell membrane.
Adenosine is a nucleoside.
Calcium ions are inorganic molecules.
Glucose or carbohydrates are also present in cell membrane as polysaccharide.
So the correct answer is 'Calcium ions'.
Question 4
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Growth, development and function of the living body is due to

A
Order

B
Homeostasis

C
Metabolism

D
Adaptation

Solution

Metabolism is the set of life-sustaining chemical reactions in an organism. The three main purposes of metabolism are the conversion of food/fuel to energy to run cellular processes; the conversion of food/fuel to building blocks for proteins, lipids, nucleic acids, and some carbohydrates; and the elimination of nitrogenous wastes. These enzyme catalyst reactions allow the organism to grow and to reproduce, maintain their structures and respond to their environment.

So the correct option is "Metabolism'.
Question 5
1 / -0

Which protein helps in folding and transport of polypeptide chain?

A
Chaperons

B
Actin

C
Glycosyl transferase

D
Tubulin
Solution
- Chaperons or Molecular Chaperons are the proteins that help in folding a polypeptide chain into a 3-dimensional protein structure.
- They help by aligning disulphide linkages.
- They are present on the inner lining of Endoplasmic reticulum.
- Example-Hsp70.
- So, the correct option is 'Chaperons'.
Question 6
1 / -0

Macromolecule, most diverse in cell to control physiological and chemical properties is?

A
Nucleic acid

B
Protein

C
Glycogen

D
Oligosaccharide
Solution
- Macromolecules of the living cell that controls all the physiological and chemical properties of the cell are the nucleic acid which are formed by binding of a pentose sugar, a phosphate group, and a nitrogen base.
- These nucleic acid are present inside the nucleus of the eukaryotic cell and are form the genetic material of the cell. The nitrogen base present in the nucleic acid form codons which code for the formation of protein chains which are either the proteins used for formation of cell structures or either the enzymes which are used to initiate the various process in the cell.
- The process of protein synthesis which starts by the transcription of a DNA strand which is a nucleic acid and then proceeds for the formation of protein which will regulate various functions.
- Therefore it can be said the nucleic acid along with other macromolecules controls the functions and properties of the cell
Therefore the answer option A is correct.
Question 7
1 / -0

Most diverse macromolecules, found in the cell both physically and chemically are?

A
Proteins

B
Carbohydrates

C
Nucleic acids

D
Lipids

Solution

Component %of the total cellular mass
Water 70-90
Proteins 10-15
Carbohydrates
3
Lipids 2
Nucleic acids 5-7
Ions 1
Four major classes of macromolecules may be identified, these are proteins, polysaccharides, lipids, and nucleic acids. The relative amount of these macromolecules in the cell are given in the table. Out of all macromolecules found in the cell, the proteins are most chemically and physically diverse.

So the correct option is "Proteins".
Question 8
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Which of the following statement(s) is/are correct for Metabolism?

A
Metabolism is the defining feature of any living organism.

B
Metabolic reactions can be catabolic or anabolic.

C
Coma patient show metabolism as well.

D
All of the above
Question 9
1 / -0

Casein present in milk. What is casein?

A
Bacterium

B
Sugar

C
Protein

D
Fat
Solution
- Casein is a family of related phosphoproteins.
- These proteins are commonly found in mammalian milk, comprising 80% of the proteins in cow's milk and between 20% and 45% of the proteins in human milk.
- Casein has a wide variety of uses, from being a major component of cheese, to use as a food additive.
- Hence, Casein present in milk is a protein.
- So, the correct answer is 'Protein'.
Question 10
1 / -0

The enzyme increase rate of reaction by

A
Increasing activation energy

B
Decreasing activation energy

C
Without affecting the activation energy

D
None of the above
Solution
- Enzymes are biological catalysts which speed up the metabolic reaction by decreasing the activation energy.
- The energy required to start a chemical reaction is called activation energy.
- Enzymes bind to the reactant molecules which are called the substrate specifically, at a site on the enzyme molecule called the active site and forms enzyme-substrate complex thus, less energy is required.
- Lower the activation energy for a reaction faster the rate of reaction.
- So, the correct answer is 'Decreasing activation energy'.

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Component	%of the total cellular mass
Water	70-90
Proteins	10-15
Carbohydrates	3
Lipids	2
Nucleic acids	5-7
Ions	1

Biomolecules Test - 81

Result

Biomolecules Test - 81

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Question 1

Inhibit the catalytic activity of the enzyme

Prevent the binding of substrate

Generally, a strong covalent bond is formed between an inhibitor and an enzymes

Inhibitors can becompetitive or non-competitive

Solution

Question 2

Collagen

Chitin

Cellulose

Choline

Solution

Question 3

Lecithin

Adenosin

Calcium ions

Glucose

Solution

Question 4

Order

Homeostasis

Metabolism

Adaptation

Solution

Question 5

Chaperons

Actin

Glycosyl transferase

Tubulin

Solution

Question 6

Nucleic acid

Protein

Glycogen

Oligosaccharide

Solution

Question 7

Proteins

Carbohydrates

Nucleic acids

Lipids

Solution

Question 8

Metabolism is the defining feature of any living organism.

Metabolic reactions can be catabolic or anabolic.

Coma patient show metabolism as well.

All of the above

Question 9

Bacterium

Sugar

Protein

Fat

Solution

Question 10

Increasing activation energy

Decreasing activation energy

Without affecting the activation energy

None of the above

Solution

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