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
When yeast ferments glucose,the products are

(A) water+ Co₂	(B) ethanol+CO₂
(C) ethnol +H₂O	(D) methanol+co₂

Question-2
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-3
The total number of nitrogenous bases in human genome is estimated to be about

(A) 3.5 million	(B) 35 thousand
(C) 35 million	(D) 3.1 billion

Question-4
DNA finger printing technique was first developed by

(A) Boysen and Jensen	(B) Edwards and Steptoe
(C) Schleiden and Schwann	(D) Jeffreys, Wilson

Question-5
Gbberella fujikurei is used for the production of

(A) lactic acid	(B) acetic acid
(C) gluconic acid	(D) gibberellic acid

Question-6
Which of the following disease can be cured by interferon?

(A) cancer	(B) malaria
(C) jaundice	(D) tuberculosis

Question-7
Milk tastes sour when kept in the open for sometime due to formation of

(A) malic acid	(B) citric acid
(C) lactic acid	(D) carbonic acid

Question-8
Which of the following vitamin contains cobalt?

(A) vitamin-B₁	(B) vitamin-B₂
(C) vitamin-B₆	(D) vitamin-B₁₂

Question-9
A cell coded protein formed in response to infection with most animal viruses is

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

Question-10
The organism, used for alcoholic fermentation, is

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

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Plus 2 Biology Science

Tamil Nadu (English Medium)

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