Free Biotechnology And Its Applications (Daily Quiz: 14) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Biotechnology And Its Applications (Daily Quiz: 14) Time:

Question-1

Genes of interest can be selected from a genomic library by using

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

A hybridization probe is a fragment of DNA of variable length which is used in DNA samples to detect the presence of nucleotide sequence (the DNA target) that are complementary to the sequence in the probe. The probe hybridize to single–stranded DNA whose base sequence allow probe target base pairing due to complementary between the probe and target.


Question-2

Assertion:
Transgenic animals are made that carry genes which makes them more sensitive to toxic substances than non transgenic animals.
Reason:
Toxicity testing in such animals will allow us to obtain result in less time.

(a)

(b)

(c)

(d)


Question-3

Maximum utilization of the techniques of biotechnology has been made in the field of –

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

Maximum utilization of the techniques of biotechnology has been made in the field of medicines


Question-4

Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produces (in the host cells)

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Many nematodes live in plants and animals including human beings. A nematode Meloidogyne incognita infests the roots of tobacco plants and causes a great reduction in yield. A novel strategy was adopted to prevent this infection that was based on the process of RNA interference (RNAi). RNA interference (RNAi) is the phenomenon of inhibiting activity of a gene by synthesis of RNA molecules complementary to the mRNA. The normal (in vivo synthesized) mRNA of a gene is said to be "sense" because it carries the codons that are "read" during translation. Normally, the complement to the mRNA "sense" strand will not contain a sequence of codons that can be translated to produce a functional protein; thus, this complementary strand is called "antisense RNA". The anti-sense RNA and mRNA molecules will anneal to form duplex RNA molecules (or double stranded RNA) and the duplex RNA molecules can not be translated. Thus, the presence of anti-sense RNA will block translation of the mRNA of the affected gene.


Question-5

A probe which is a molecule is used to locate specific sequences in a mixture of DNA or RNA molecules, it could be

(a)

(b)

(c)

(d)


Molecular Basis Of Inheritance

Quiz 1091

Biotechnology Principles And Processes

Quiz 1092

Biotechnology And Its Applications

Quiz 1093

Organisms And Populations

Quiz 1094

Ecosystem

Quiz 1095

NEET Biology Quiz

Topic Wise Quizzes

NEET Biology MCQ

Topic Wise Exercise

Today Quiz

Evolution

This Week Quiz

Evolution

This Month Quiz

Human Reproduction