CDS I 2017 General Knowledge Previous Year Paper (05-Feb-2017)

Question 1

Polynucleotide chain of DNA contains

Accepted Answer

A nitrogenous base, deoxyribose sugar and phosphate group

Answer

A nitrogenous base, ribose sugar and phosphate group

Answer

Deoxyribose sugar, ribose sugar and phosphate group

Answer

A nitrogenous base and phosphate group only

Question 2

The process of copying genetic information from one strand of DNA into RNA is termed as

Accepted Answer

Transcription

Answer

Translation

Answer

Replication

Answer

Mutation

Question 3

AIDS is caused by the Human Immunodeficiency Virus (HIV). The transmission of HIV infection generally occurs through

Accepted Answer

Transfusion of contaminated blood and blood products

Answer

Eating contaminated food and water

Answer

Inhaling polluted air

Answer

Shaking hand with infected person

Question 4

In human body, the cell growth and differentiation are highly controlled and regulated, but in cancer cells

Accepted Answer

There is breakdown of these regulatory mechanisms leading to formation of benign and malignant tumours

Answer

Controlled cell division and overproduction of genetic material occur

Answer

RNA is mutated and produced in less amount

Answer

DNA is mutated and produced in less amount

Question 5

Most viruses that infect plants possess

Accepted Answer

single-stranded RNA

Answer

single-stranded DNA

Answer

double-stranded DNA and RNA

Answer

double-stranded RNA only