Biomolecules Test

Result

Biomolecules Test - 26

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Optimum temperature is the temperature at which an enzyme

A
Works at its best

B
Is not destroyed

C
Action is reversed

D
Is inactivated

Solution

Enzymes are made up of proteins which accelerates the rate of the reaction. It lowers the activation energy and converts the reactants into substrate. The increased temperature increases the kinetic energy of the enzymes which further accelerates the activity of the enzyme but at higher temperature it gets denatured as the peptide bonds between the proteins molecules breaks which disrupts the structure of enzymes. It requires an optimum temperature for its activation. High temperature denatures the enzyme and low temperature deactivates the enzyme.
So, the correct answer is option A.
Question 2
1 / -0

Which is not a hydrolase?

A
Protease

B
Dehydrogenase

C
Sucrase

D
Amylase

E
Esterase

Solution

A dehydrogenase is an enzyme that oxidizes a substrate by reducing an electron acceptor, usually a flavin coenzyme known as FMN.
While all other are hydrolases because they take part in the hydrolysis.
So the correct answer is C.
Question 3
1 / -0

Match and find the correct option.
$$I$$ $$II$$
$$(a)$$ Transferases $$(i)$$ Epimerase
$$(b)$$ Hydrolases $$(ii)$$ Kinases
$$(c)$$ Lyases $$(iii)$$ Phosphatase
$$(d)$$ Isomerase $$(iv)$$ Fumarase

A
$$a - ii, b - iii, c - iv, d - i$$

B
$$a - ii, b - iii, c - i, d - iv$$

C
$$a - ii, b - i, c - iii, d - iv$$

D
$$a - ii, b - iv, c - iii, d - i$$

Solution

A kinase is an enzyme that catalyzes the transfer of phosphate groups. It belongs to the family of transferase.
Phosphatase enzyme catalyzes the hydrolysis of its substrate, it is a subcategory of hydrolases.
Fumarase enzyme belongs to the family of lyases, specifically hydro lyases, which cleave carbon-oxygen bonds.
Epimerases are isomerase enzymes that catalyze the inversion of compounds. So the correct answer is A.
Question 4
1 / -0

Richest source of protein is

A
Wheat

B
Sago

C
Soyabean

D
Rice

Solution

Soyabean is the richest source of protein. It is commonly known as glycine max. Phytic acid, dietary minerals and vitamin B are also present in the soybeans. It is leguminous plant which helps in fixation of nitrogen. The soy proteins are heat-stable storage protein. It also produces oil. Wheat, rice and sago are the rich source of carbohydrate which produces instant energy.
So, the correct answer is option C.
Question 5
1 / -0

Water molecules are joined by

A
Amide bonding

B
Covalent bonding

C
Hydrogen bonding

D
Van der Waals force

Solution

Hydrogen bond is formed between polar groups. It is a electrostatic interaction between a hydrogen atom covalently bound to a highly electronegative atom such as nitrogen, oxygen or fluorine. Electronegative atoms have tendency to attract electrons towards themselves. In the hydrogen bond of water molecule, hydrogen acts as a electron donor. The electronegative oxygen exerts the electric field and attract the electrons from the hydrogen and gets negative charge while hydrogen gets a positive charge which leads to formation of hydrogen bond between hydrogen and oxygen.
So, the correct answer is option C.
Question 6
1 / -0

.......... are the most abundant protein in the living world.

A
Ribozyme of plants and collagen of animals

B
RuBisCO of plants and collagen of animals

C
PEPcase of plants and keratin of animals

D
Alcohol dehydrogenase of plants and melanin of animals

Solution

RuBisCO is the most abundant enzyme which is used to fix carbon during dark reaction of the photosynthesis. It is a primary acceptor of carbon dioxide during Calvin cycle. It is also known as Ribulose-1,5-bisphosphate carboxylase/oxygenase. It fixes the carbon dioxide to 3-phosphoglycerate. It also accepts oxygen during photorespiration and forms phosphoglycolate and 3-phosphoglycerate.
Collagen is an amino acid protein. It is a structural protein. It is mostly found in tendon, ligament, and skin. 90% collagen is present in the animal cells.
So, the correct answer is option B.
Question 7
1 / -0

Coenzymes NAD and NADP contain the vitamins

A
Niacin

B
Biotin

C
Thiamine

D
Vitamin $${B}_{12}$$

Solution

Nicotinamide adenine dinucleotide (NAD) and nicotinamide adenine dinucleotide phosphate (NADP) are derivatives of the B-vitamin i.e., niacin. They act as coenzymes in hundreds of redox reactions.
Question 8
1 / -0

Amino acids bonded together in long peptide chains form

A
Nucleic acids

B
Organic acids

C
Proteins

D
Hydrocarbons

Solution

Multiple amino acids linked together by the means of peptide bonds to form long peptide chain which results in the formation of proteins.
Hence, the correct answer is 'Proteins'.
Question 9
1 / -0

In which molecule is energy stored in the body?

A
RNA

B
DNA

C
ADP

D
ATP

Solution

Adenosine triphosphate is a nucleotide also known as the energy currency of the cell that stores the energy in the form of phosphate bonds. When this bond breaks energy releases.
DNA and RNA are the genetic material of the living organism.
So the correct option is 'ATP'.
Question 10
1 / -0

A nucleic acid is made up of which kind of monomers?

A
Amino acids

B
Nucleotides

C
Alternating sugar.and phosphate groups

D
Monosaccharides

Solution

Nucleic acids are the polymers of nucleotides which are form when a nitrogenous base is linked to a pentose sugar through an N-glycosidic bond and the further phosphate group is linked through a phosphodiester bond.
So the correct option is 'Nucleotides'.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

$$I$$	$$II$$
$$(a)$$ Transferases	$$(i)$$ Epimerase
$$(b)$$ Hydrolases	$$(ii)$$ Kinases
$$(c)$$ Lyases	$$(iii)$$ Phosphatase
$$(d)$$ Isomerase	$$(iv)$$ Fumarase

Biomolecules Test - 26

Result

Biomolecules Test - 26

Score

-

Rank

-

SHARING IS CARING

Question 1

Works at its best

Is not destroyed

Action is reversed

Is inactivated

Solution

Question 2

Protease

Dehydrogenase

Sucrase

Amylase

Esterase

Solution

Question 3

$$a - ii, b - iii, c - iv, d - i$$

$$a - ii, b - iii, c - i, d - iv$$

$$a - ii, b - i, c - iii, d - iv$$

$$a - ii, b - iv, c - iii, d - i$$

Solution

Question 4

Wheat

Sago

Soyabean

Rice

Solution

Question 5

Amide bonding

Covalent bonding

Hydrogen bonding

Van der Waals force

Solution

Question 6

Ribozyme of plants and collagen of animals

RuBisCO of plants and collagen of animals

PEPcase of plants and keratin of animals

Alcohol dehydrogenase of plants and melanin of animals

Solution

Question 7

Niacin

Biotin

Thiamine

Vitamin $${B}_{12}$$

Solution

Question 8

Nucleic acids

Organic acids

Proteins

Hydrocarbons

Solution

Question 9

RNA

DNA

ADP

ATP

Solution

Question 10

Amino acids

Nucleotides

Alternating sugar.and phosphate groups

Monosaccharides

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.