Tamil Nadu (English Medium) Plus 2 Biology Science Study Materials, Online Learning, Question Papers, Classnotes, Practice Test, MCQ | Smartindia Educational Program : www.smartindia.net.in

Question-1
Interferons are

(A) defensive mechanism	(B) proteins released by animal or plant cell, on being infected with virus
(C) proteins synthesized in large quantities by cell, actively engaged in synthesis	(D) none of these

Question-2
Which of the following interferon gene is found in human genome?

(A) leukocyte interferon gene	(B) fibroblast interferon gene
(C) lymphocyte interferon gene	(D) all of these

Question-3
The first hormone artificially produced by culturing bacteria is.

(A) Insulin	(B) thyroxin
(C) adrenalin	(D) testosterone

Question-4
A cell coded protein formed in response to infection with most animal viruses is

(A) histone	(B) anitigen
(C) antibody	(D) interferon

Question-5
Which of the following micro-organism is used for the production of citric acid in industries?

(A) A.niger	(B) P.citrinum
(C) R.nigricans	(D) L.bulgaris

Question-6
A bioreactor refers to

(A) fermentation tank	(B) organisms reacting to a stimulus
(C) tank for biochemical reactions	(D) nuclear reactor for biological studies

Question-7
The organism, used for alcoholic fermentation, is

(A) Pseudomonas	(B) Penicillium
(C) Aspergillus	(D) Saccharomyces

Question-8
Interferon was first discovered by

(A) Isaacs and Lindemann	(B) Wright and Doughlass
(C) Haeckel and Von Bea	(D) Lamarck and Treviranus

Question-9
The nature of insulin is

(A) Fat	(B) lipid
(C) protein	(D) nucleotide

Question-10
Who coined the term antibiotics?

(A) Darwin	(B) Woodruff
(C) Flemming	(D) Selman Waksman

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Plus 2 Biology Science

Tamil Nadu (English Medium)

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