Biology - Questions and Answers, General Study (GK)

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731.

Hemophilia, a human disease, is caused by

(a)Bacterial infection

(b)Mutant gene

(c)Viral infection

(d)Fungal infection

Comment

Answer is: B

732.

A colour-blind man is married to a normal-visioned woman whose parents also had normal vision. What proportion of their children is likely to be colour-blind ?

(a)25 per cent

(b)50 per cent

(d)0 per cent

Comment

Answer is: D

733.

The disease, sickle-cell anaemia, is caused by

(a)Malarial infection

(b)Iron deficiency

(c)Poor hygiene

(d)None of these

Comment

Answer is: D

734.

A person with which one of the following blood group is considered a universal donor ?

(a)A

(b)B

(c)AB

(d)O

Comment

Answer is: D

735.

A person with blood group AB is sometimes called a universal recipient because of

(a)Lack of antibodies

(b)The presence of antibodies

(c)Lack of antigens

(d)Lack of both antigens and antibodies

Comment

Answer is: A

736.

Phenylketonuria is a human disease. A person affected by the disease suffers from

(a)Kidney failure

(b)Mental idiocy

(c)Sexual infertility

(d)Liver failure

Comment

Answer is: B

737.

A child was found to be perfectly normal at birth.A few years later, however, his parents noticed What his activities were sluggish. He was, therefore, taken to a clinic where the doctor diagnosed him mentally retarded. What do you think he was suffering from ?

(a)Alkaptonuria

(b)Phenylketonuria

(c)Parkinson's disease

(d)Epilepsy

Comment

Answer is: B

738.

Which of the following fungi has been extensively used for genetical studies ?

(a)Green mold

(b)Pink bread mold

(c)Mushroom

(d)Bread mold

Comment

Answer is: B

739.

The fungus, Puccinia graminis, causes a serious plant disease. Which of the following crops is affected by it ?

(a)Wheat

(b)Rice

(c)Gram

(d)Maize

Comment

Answer is: A

740.

Lathyrism a human disease causing paralysis of the lower limbs, is caused by

(a)Consumption of kesari dal

(b)Viral infection

(c)Nervous failure

(d)Bacterial infection

Comment

Answer is: A

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Biology - Questions and AnswersPage 74

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