HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions for Biology

Describe with examples of pyramids of number and biomass.

R. Q. for proteins is about .......................

(a) 0.7

(b) 0.8

(c) 0.9

(d) 1.0

Explain replication of bacteriophage with the help of a suitable diagram.

Give any 'two' examples of endangered species

What is Bacteriophage?

Give advantages of single cell protein (SCP).

In a food chain, the herbivores are represented by

(A) producers

(B) primary consumers

(C) secondary consumers

(D) decomposers

Explain energy pyramid

Define the term:

Osmosis

As the base sequence present on one strand of DNA decides the base sequence of other strands; this strand is considered as ______.

A person is showing symptoms like increased BMR, heart rate, pulse rate, blood pressure and deposition of fats in eye sockets. Name the disease he is suffering from.

Answer the following question in ‘One’ sentence only:

Define ‘mutation breeding’.

Dead and dried cell mass of microbes having nutritive value is also known as -----------

What is ‘jumping genes’?

Sketch and label formation of typical spinal nerve. 

Long answer question.

Explain the process of conduction of nerve impulses up to the development of action potential.

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

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?