HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions

What is Red Data Book?

Name the enzyme and state its property that is responsible for continuous and discontinuous replication of the two strands of a DNA molecule

Which of the following is a chemical transmitter in the synapse of neurons?

Define Eutrophication.

Microorganisms also help in production of food like ______________.

Multiple Choice Question:

The molecular knives of DNA are _______.

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:

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.

Which of the following is the correct recognition sequence of restriction enzyme hind III?

Multiple choice question.

Which of the hormones can replace vernalization?

The principle pathway of water translocation in angiosperms is ______

Multiple choice question.

Which of the following is required for stimulation of flowering in the plants?

Multiple choice question.

For short-day plants, the critical period is

Which of the following is day-neutral plant?

Multiple choice question.

Essential macroelements are ____________.

Multiple choice question.

Necrosis means ______.

Very Short Answer Question:

What does it mean by ‘open growth’?

Explain traditional use of Biotechnology.

Define biotechnology. Give any three application of it?