Biomolecules Test

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Biomolecules Test - 32

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following substance acts as stimulator?

A
vitamins

B
enzymes

C
hormones

D
carbohydrates

Solution

Hormones acts as stimulator. Hormones are essential for every activity of life, including the processes of digestion, metabolism, growth, reproduction, and mood control. Many hormones, such as neurotransmitters, are active in more than one physical process. To release active hormones quickly into the irulation, hormone biosynthetic cells may produce and store biologically inactive hormones in the form of pre- or prohormones. These can then be quickly converted into their active hormone form in response to a particular stimulus.
Question 2
1 / -0

Guanine is an example of:

A
Nucleotide

B
Nucleoside

C
Purine base

D
Pyrimidine base

Solution

Guanine is an example of purine base.

Another example of purine base is adenine.

Cytosine thymine and uracil contains pyrimidine ring.

Option C is correct.
Question 3
1 / -0

Nucleic acids are polymers of:

A
Nucleotides

B
Nucleosides

C
Nuclei of heavy metals

D
Proteins

Solution

DNA and RNA are termed as nucleic acids.
They are polymers of nucleotides.
A nucleotide consists of a base, a sugar molecule and a phosphate molecule.
Question 4
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Each codon consists of how many nitrogen bases?

A
four

B
twenty

C
three

D
sixty four

Solution

Each codon codes for 1 amino acids, which in turn, are made by the combination of 3 nitrogen bases.
Question 5
1 / -0

Assertion ( A): Thymine pairs with adenine whereas cytosine pairs with Guanine in DNA molecule .
Reason ( R ):The hydrogen bonding between bases of two strands is Highly specific .

A
Both A and R are true and R is the correct explanation of A .

B
Both A and R are true but R is not a correct explanation of A

C
A is true but R is false

D
A is false but R is true
Question 6
1 / -0

Nucleic acids are

A
small molecules

B
polymeric in nature

C
the compounds of C, H and O

D
essentially proteins

Solution

Nucleic acids include DNA and RNA. They are polymers of nucleotides (a base + a sugar ring and a phosphate molecule). So, B is correct.
Question 7
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Vitamin D is also known as:

A
growth vitamin

B
sunshine vitamin

C
reproductive vitamin

D
ascorbic acid

Solution

Vitamin $$D$$ is also known as sunshine vitamin. This vitamin is mainly obtained from sun rays.

It is essential for growth of bones, helps the body to absorb calcium.

Option B is correct.
Question 8
1 / -0

The vitamin which is water soluble and antioxidant is :

A
vitamin B$$_{6}$$.

B
vitamin B$$_{12}$$.

C
vitamin C.

D
vitamin E.

Solution

The vitamin which is water-soluble and antioxidant is vitamin $$C$$.
It helps protect healthy cells from damage caused by free radicals. It is a water-soluble vitamin present in citrus fruits and juices, green peppers, cabbage, spinach, broccoli, kiwi and strawberries, etc.

So, option C is the correct answer.
Question 9
1 / -0

Which of the following is a dicarboxylic acid with one double bond?

A
Ethylene `

B
Traumatic acid

C
Absicic acid

D
Auxins

Solution

Traumatic acid is a dicarboxylic acid with one double bond. Its molecular formula is $$C_{12}H_{20}O_4$$. It is found in some plants and stimulates healing when a plant tissue undergoes trauma.
Question 10
1 / -0

Which of the following is not an amino acid?

A
Glycine

B
Alanine

C
Histidine

D
Benzidine

Solution

Benzidine is not an amino acid but it is a aromatic amine. Its molecular formula is $$C_{12}H_{12}N_2$$.

Its IUPAC name is 4,4'-diaminobiphenyl, which is used as part of a test for cyanide and also in the synthesis of dyes.

Option D is correct.

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Biomolecules Test - 32

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Biomolecules Test - 32

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Question 1

vitamins

enzymes

hormones

carbohydrates

Solution

Question 2

Nucleotide

Nucleoside

Purine base

Pyrimidine base

Solution

Question 3

Nucleotides

Nucleosides

Nuclei of heavy metals

Proteins

Solution

Question 4

four

twenty

three

sixty four

Solution

Question 5

Both A and R are true and R is the correct explanation of A .

Both A and R are true but R is not a correct explanation of A

A is true but R is false

A is false but R is true

Question 6

small molecules

polymeric in nature

the compounds of C, H and O

essentially proteins

Solution

Question 7

growth vitamin

sunshine vitamin

reproductive vitamin

ascorbic acid

Solution

Question 8

vitamin B$$_{6}$$.

vitamin B$$_{12}$$.

vitamin C.

vitamin E.

Solution

Question 9

Ethylene `

Traumatic acid

Absicic acid

Auxins

Solution

Question 10

Glycine

Alanine

Histidine

Benzidine

Solution

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