Comprehension
Read the following paragraph and answer the questions given below :
It has been observed that nucleus of a living cell is responsible for this transmission of inherent characters, also called heredity. The particles in the nucleus of cell, responsible for heredity, are called chromosomes, which are made up of proteins and another type of biomolecules called nucleic acids. These are mainly of two types, the deoxyribonucleic acids (DNA) and ribonucleic acid (RNA). Since nucleic acids are long chain polymers of nucleotides, so they are also called polynucleotides. RNA molecules are of three types and they perform different functions. They are named as messenger RNA (m-RNA), ribosomal RNA (r-RNA) and transfer RNA (t-RNA).
Question: 1

Give full form of DNA and RNA.

Show Hint

Remember that the difference in names comes from the sugar moiety: Deoxyribose in DNA and Ribose in RNA.
Updated On: Jan 7, 2026
Hide Solution
collegedunia
Verified By Collegedunia

Solution and Explanation

The paragraph explicitly mentions the two types of nucleic acids found in the nucleus of a living cell.
DNA stands for Deoxyribonucleic acid.
RNA stands for Ribonucleic acid.
Was this answer helpful?
0
0
Question: 2

How many types of RNA are there?

Show Hint

The three types of RNA play distinct roles in protein synthesis: m-RNA carries the code, t-RNA brings amino acids, and r-RNA forms the ribosome structure.
Updated On: Jan 7, 2026
Hide Solution
collegedunia
Verified By Collegedunia

Solution and Explanation

According to the provided text, RNA molecules are of three types.
These types are listed as messenger RNA (m-RNA), ribosomal RNA (r-RNA), and transfer RNA (t-RNA).
Was this answer helpful?
0
0
Question: 3

Who is responsible for heredity?

Show Hint

While the nucleus is the organelle, the specific molecular carriers of heredity within the nucleus are the chromosomes and DNA.
Updated On: Jan 7, 2026
Hide Solution
collegedunia
Verified By Collegedunia

Solution and Explanation

The first sentence of the passage states that "It has been observed that nucleus of a living cell is responsible for this transmission of inherent characters, also called heredity."
Therefore, the nucleus is the organelle responsible for heredity.
Was this answer helpful?
0
0
Question: 4

Define heredity.

Show Hint

Heredity is the biological process responsible for the resemblance between parents and offspring.
Updated On: Jan 7, 2026
Hide Solution
collegedunia
Verified By Collegedunia

Solution and Explanation

Based on the text, heredity is defined as "this transmission of inherent characters".
It refers to the passing of genetic traits from parents to offspring.
Was this answer helpful?
0
0
Question: 5

How many types of nucleic acids are there?

Show Hint

DNA is primarily the genetic material, while RNA is involved in the expression of that genetic information.
Updated On: Jan 7, 2026
Hide Solution
collegedunia
Verified By Collegedunia

Solution and Explanation

The passage states that nucleic acids "are mainly of two types".
These two types are identified as deoxyribonucleic acids (DNA) and ribonucleic acid (RNA).
Was this answer helpful?
0
0

Top Questions on Biomolecules

View More Questions

Questions Asked in PSEB exam

View More Questions