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

Describe the steps in breathing.

Write a short note on callus culture.

Write a short note on suspension culture.

Name the enzymes involved in replacement of gaps during RNA processing in prokaryotes and eukaryotes.

Give importance of coconut milk in tissue culture.

What is oxygen dissociation curve?

Give function of carbonic anhydrase.

What does the plant tissue culture medium consists of?

In a mature, functional mRNA of eukaryotes______.

Complete the table:

Define the Transfection.

Interpret the given diagrams A and B. Enlist the changes occuring, during inspiration and expiration.

What is mycoherbicide?

How CO₂ makes idlies puffy?

______ enzymes are used as biological scissors in r-DNA technology.

What is the correct sequence of the stages in bacteriophage lytic cycle?

(A) Attachment, Penetration, Lysis, Multiplication

(B) Attachment, Penetration, Multiplication, Lysis

(C) Lysis, Penetration, Multiplication, Attachment

(D) Attachment, Lysis, Multiplication, Penetration

Give diagrammatic representation of pyramid of numbers.

Explain the semi-conservative replication of eukaryotic DNA.

Explain the concept ‘survival of the fittest’.

Distinguish between a food chain and a food web.