Biomolecules Test

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Biomolecules Test - 51

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is substituted purines?

A
Adenine

B
Cytosine

C
Thymine

D
Uracil

Solution

Adenine and guanine are substituted purines.

Cytosine, thymine and uracil are substituted pyrimidines.

Option A is correct.
Question 2
1 / -0

Hormones fall into two basic categories:

A
Stimulator hormones and receptor hormones

B
Male hormones and female hormones

C
Non-steroid (peptide) hormones and steroid hormones

D
Inter-organ and inter-organismic

Solution

Hormones fall into two basic categories that are non-steroid (peptide, eg- insulin) hormones and steroid hormones (eg- adrenaline, testosterone).
Thus, the correct answer is option C.
Question 3
1 / -0

The primary target organ of aldosterone is :

A
the kidney

B
the pancreas

C
the liver

D
all of the above

Solution

Aldosterone is type of Mineralo-corticoid hormne, it affects the kidney in low GFR (glomerulation filtration rate) condition and maintain it.
The process for the working of aldosterone on kidney is as follows-
Blood $$Na^{+}$$ level increase $$\rightarrow$$ Water in blood(increase)$$\rightarrow$$ Blood volume(increase) $$\rightarrow$$ Blood pressure(increase)
Question 4
1 / -0

A metal present in vitamin $${B}_{12}$$ is:

A
aluminium

B
zinc

C
iron

D
cobalt

Solution

Vitamin $$B_{12}$$ is also referred to as cobalamin, because it contains a metal ion (cobalt). This makes it the largest and most complex vitamin of all. The vitamin can only be synthesized by bacteria and therefore is mainly present in animal products. Two forms of Vitamin $$B_{12}$$ are used in the human body.
Question 5
1 / -0

Steroid hormones lead to the :

A
destruction of normal DNA

B
replication of hormones by the cell DNA

C
synthesis of new enzymes

D
alteration of the Krebs cycle

Solution

Steroid hormones are derived from cholesterol. Then cause changes within a cell. They lead to the replication of hormones by the cell DNA.
Question 6
1 / -0

Parathyroid hormone (PTH):

A
stimulates the release of calcium by the kidneys

B
stops the absorption of calcium from the intestine

C
causes blood calcium level to decrease

D
causes blood phosphate level to decrease

Solution

Hormones are used to communicate between the organs of the body. The release of parathyroid hormone causes blood phosphate level to decrease. When blood calcium level is low, this hormone is released so that the level comes back to normal. Increased level of PTH may lead to joint pains, muscles weakness and many more effects.
Question 7
1 / -0

The alkali resistant nucleic acid is:

A
DNA

B
tRNA

C
mRNA

D
rRNA

Solution
Question 8
1 / -0

The general formula of disaccharides is __________ .

A
$$C_{12}H_{22}O_{10}$$

B
$$C_{12}H_{22}O_{12}$$

C
$$C_{12}H_{22}O_{11}$$

D
none of these

Solution

General formula of disaccharide is $$C_{12}H_{22}O_{11}$$
Formation of disaccharide:-
When two monosaccharides react in a condensation reaction the products are a disaccharide and a molecule of water, an ether or glycosidic, link joins $$2$$ monosaccharides to form a disaccharide.
Sucrose, lactose and maltose are isomers, they have the same chemical formula, $$C_{12}H_{22}O_{11}$$, but different structures
Question 9
1 / -0

Thymidylate is a:

A
purine base

B
nucleoside

C
nucleotide

D
pyrimidine base

Solution
Question 10
1 / -0

Thymine is exclusively present in?

A
DNA

B
tRNA

C
mRNA

D
rRNA

Solution

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Re-Attempt Weekly Quiz Competition

Biomolecules Test - 51

Result

Biomolecules Test - 51

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SHARING IS CARING

Question 1

Adenine

Cytosine

Thymine

Uracil

Solution

Question 2

Stimulator hormones and receptor hormones

Male hormones and female hormones

Non-steroid (peptide) hormones and steroid hormones

Inter-organ and inter-organismic

Solution

Question 3

the kidney

the pancreas

the liver

all of the above

Solution

Question 4

aluminium

zinc

iron

cobalt

Solution

Question 5

destruction of normal DNA

replication of hormones by the cell DNA

synthesis of new enzymes

alteration of the Krebs cycle

Solution

Question 6

stimulates the release of calcium by the kidneys

stops the absorption of calcium from the intestine

causes blood calcium level to decrease

causes blood phosphate level to decrease

Solution

Question 7

DNA

tRNA

mRNA

rRNA

Solution

Question 8

$$C_{12}H_{22}O_{10}$$

$$C_{12}H_{22}O_{12}$$

$$C_{12}H_{22}O_{11}$$

none of these

Solution

Question 9

purine base

nucleoside

nucleotide

pyrimidine base

Solution

Question 10

DNA

tRNA

mRNA

rRNA

Solution

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