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

What are the different types of water?

In which forms water is available to roots for absorption?

DNA polymerase enzyme used in PCR is isolated from ____________ bacteria.

Annealing step of PCR operates at ______ °C.

Name the plant disease caused by Agrobacterium tumefaciens.

Which of the following is the correct recognition sequence of restriction enzyme Eco RI?

Observe the given sequence of nitrogenous bases on a DNA fragments and answer the following questions:

5' - CAGAATTCTTA - 3'
3' - GTCTTAAGAAT - 5'

1. Name a restriction enzyme which can recognise this DNA sequence.
2. Write the sequence after digestion.
3. Why are the ends generated after digestion called sticky ends?

Expand the following acronym:

BAC

Restriction enzymes were discovered by ______.

The PCR technique is used for ______.

Lesser variation in biomass production over a period of time is called ______.

Which vector is mostly used in rDNA technology in plants?

Name two restriction enzymes used in PCR.

Describe the term Niche.

Rivet Popper Hypothesis is an analogy to explain the significance of ______.

What is polymerase chain reaction (PCR)?

Describe three steps involved in mechanism of PCR.

Distinguish between Hibernation and Aestivation.

Distinguish between Hibernation and Aestivation.

Distinguish between the following:

Hibernation and Aestivation