Balbharati solutions for Biology [English] 12 Standard HSC Maharashtra State Board chapter 4 - Molecular Basis of Inheritance [Latest edition]

Multiple Choice Question:

Griffith worked on ____________.

Multiple Choice Question:

The molecular knives of DNA are _______.

Multiple Choice Question:

Translation occurs in the _______.

The enzyme required for transcription is _______.

Multiple Choice Question:

Transcription is the transfer of genetic information from _______.

Multiple Choice Question:

Which of the following is NOT part of protein synthesis?

Multiple Choice Question:

In the RNA molecule, which nitrogen base is found in place of thymine?

How many codons are needed to specify three amino acids?

Multiple Choice Question:

Which out of the following is not an example of an inducible operon?

Multiple Choice Question:

Place the following event of translation in the correct sequence

i. Binding of met-tRNA to the start codon.

ii. Covalent bonding between two amino acids.

iii. Binding of second tRNA.

iv. Joining of small and large ribosome subunits.

What is the function of an RNA primer during protein synthesis?

Very Short Answer Question:

Why the genetic code is considered as commaless?

Very Short Answer Question:

What is genome?

Which enzyme does remove supercoils from replicating DNA?

Very Short Answer Question:

Why are Okazaki fragments formed on lagging strand only?

Very Short Answer Question:

When does DNA replication takes place?

Very Short Answer Question:

Define term- codon and codogen.

Very Short Answer Question:

What is degeneracy of genetic code?

Very Short Answer Question:

Which are the nucleosomal 'core' histones?

Short Answer Question:

Write a short note on DNA packaging in the eukaryotic cell.

Enlist the characteristics of genetic code.

Short Answer Question:

Write a note on applications of DNA fingerprinting.

Short Answer Question:

Explain the role of lactose in ‘Lac Operon’.

Short Answer Question:

Write a note on Human genome project (HGP).

Short Answer Question:

Describe the structure of ‘Operon’.

Short Answer Question:

In the figure below A, B and C are three types of ______.

Short Answer Question:

Identify the labeled structures on the following diagram of translation.

• Part A is the _______
• Part B is the _______
• Part C is the _______

Short Answer Question:

Match the entries in column I with those of column II and choose the correct answer.

Long Answer Question:

Explain the process of DNA replication.

Describe the process of transcription in protein synthesis.

Long Answer Question:

Describe the process of translation in protein synthesis.

Long Answer Question:

Describe the ‘Lac-operon’.

Long Answer Question:

Justify the statement. If the answer is false, change the underlined word(s) to make the statement true

The DNA molecule is double-stranded and the RNA molecule is single-stranded.

Long Answer Question:

Justify the statement. If the answer is false, change the underlined word(s) to make the statement true

The process of translation occurs at the ribosome.

Long Answer Question:

Justify the statement. If the answer is false, change the underlined word(s) to make the statement true

The job of mRNA is to pick up amino acids and transport them to the ribosomes.

Long Answer Question:

Justify the statement. If the answer is false, change the underlined word(s) to make the statement true

Transcription must occur before translation may occur.

Long Answer Question:

Guess (i) the possible location of DNA on the collected evidence from a crime scene and (ii) the possible sources of DNA.