Biomolecules Test

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Biomolecules Test - 60

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Weekly Quiz Competition

Question 1
1 / -0

Conversion of glucose to glucose-6-phosphate can be termed as

A
Anabolic reaction

B
Catabolic reaction

C
Both A and B

D
None of the above

Solution

The anabolic processes are the reactions in which the smaller organic molecules are used for the production of the large complex molecules. The glucose molecule is the smaller molecule. When the phosphate group is added to the 6$$^{th}$$ carbon of the glucose, glucose-6-phosphate is formed which is the larger molecule.
Thus, the correct answer is option A.
Question 2
1 / -0

Conversion of glucose to pyruvate is a

A
Anabolic reaction

B
Catabolic reaction

C
Anabolic and catabolic reaction

D
None of the above

Solution

The catabolic processes are the reactions in which the large complex molecules are broken down to form the smaller molecules. The process is an exergonic process in which the energy is released due to the breaking of the bonds of the larger complex molecules. Glucose is a 6 carbon molecules which is broken down to 3 carbon pyruvate through glycolysis. This is an example of catabolic reaction.
Thus, the correct answer is option B.
Question 3
1 / -0

Reaction catalysed by enzyme 'Maltose'.

A
Starch $$\rightarrow$$ Maltose

B
Maltose $$\rightarrow$$ Glucose

C
Sucrose $$\rightarrow$$ Glucose

D
Glucose $$\rightarrow$$ Alcohol

Solution

Reaction catalysed by enzyme 'Maltase' is the conversion of $$\displaystyle Maltose \rightarrow Glucose$$.
$$\displaystyle Maltose$$ is a disaccharide and on hydrolysis, it gives $$\displaystyle glucose$$.

$$\displaystyle Maltose (C_{12}H_{22}O_{11}) \xrightarrow [hydrolysis]{'Maltase'} Glucose (C_{6}H_{12}O_{6}) +Glucose (C_{6}H_{12}O_{6})$$.
Question 4
1 / -0

The different morphological structures of the same enzyme are called as:

A
apoenzymes

B
isoenzymes

C
coenzymes

D
holoenzymes

Solution

Isoenzymes:- Isozymes are enzymes that differ in amino acid sequence but catalyze the same chemical reaction.
Example:- Lactate dehydrogenase.
Question 5
1 / -0

Fumarase belong to the major class of:

A
oxidoreductases

B
transferases

C
hydrolases

D
ligases

Solution

Fumarase belongs to the major class of hydrolases. Fumarase (or fumarate hydratase) is an enzyme that catalyzes the reversible hydration/dehydration of fumarate to malate. Fumarase comes in two forms: mitochondrial and cytosolic.
Question 6
1 / -0

Allosteric enzymes posses an extra _________ site.

A
binding

B
catalytic

C
both $$A$$ and $$B$$

D
none of the above

Solution

Allosteric enzyme:- Allosteric enzymes are enzymes that change their conformational ensemble upon binding of an effector, which results in an apparent change in binding affinity at a different ligand binding site.
Question 7
1 / -0

Study of physico-chemical nature of bio-molecules is

A
Biochemistry

B
Physiology

C
Oenology

D
Biotechnology.

Solution

Biochemistry is the study of chemical processes within and relating to living organisms It focuses on understanding how biological molecules give rise to the processes that occur within living cells and between cells which in turn relates greatly to the study and understanding of tissues, organs, and organism structure and function. Biochemical processes give rise to the complexity of life. Hence, the study of the physicochemical nature of bio-molecules is biochemistry.
So, the correct answer is 'biochemistry'.
Question 8
1 / -0

Which of the following is correct pair of pyrimidine bases?

A
Adenine & Thymine

B
Adenine & Guanine

C
Thymine & Cytosine

D
Guanine & Cytosine

Solution

DNA molecule id made up of two type of nitrogen bases purine and pyrimidine. Cytosine and Thymine (C, T) are examples of a pyrimidine which is composed of a single six atom ring and adenine and guanine (A,G) are the examples of purine. A base pair is one of the pairs A-T or C-G. The A-T pair forms two hydrogen bonds. The C-G pair is formed by three hydrogen bonding between complementary bases holds the two strands of DNA together
So, the correct answer is 'Thymine and Cytosine'.
Question 9
1 / -0

Activation energy is required for :

A
Bringing reactants together

B
Destabilisation of bonds of reactants.

C
Both A and B

D
None of the above
Question 10
1 / -0

Which one is not protein?

A
Actin

B
Myosin

C
Albumin

D
Haematin

Solution

Haematin is a brown ferric iron containing substance obtained from oxyhaemoglobin or from dried blood whereas actin and myosin are the muscle protein that helps in muscle contraction. Albumin is a globular water soluble protein that regulates the blood pressure. Thus, the correct answer is option D.

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Biomolecules Test - 60

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Biomolecules Test - 60

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Question 1

Anabolic reaction

Catabolic reaction

Both A and B

None of the above

Solution

Question 2

Anabolic reaction

Catabolic reaction

Anabolic and catabolic reaction

None of the above

Solution

Question 3

Starch $$\rightarrow$$ Maltose

Maltose $$\rightarrow$$ Glucose

Sucrose $$\rightarrow$$ Glucose

Glucose $$\rightarrow$$ Alcohol

Solution

Question 4

apoenzymes

isoenzymes

coenzymes

holoenzymes

Solution

Question 5

oxidoreductases

transferases

hydrolases

ligases

Solution

Question 6

binding

catalytic

both $$A$$ and $$B$$

none of the above

Solution

Question 7

Biochemistry

Physiology

Oenology

Biotechnology.

Solution

Question 8

Adenine & Thymine

Adenine & Guanine

Thymine & Cytosine

Guanine & Cytosine

Solution

Question 9

Bringing reactants together

Destabilisation of bonds of reactants.

Both A and B

None of the above

Question 10

Actin

Myosin

Albumin

Haematin

Solution

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