Biology

1. Whth reference to the recent developments in science which one of the following statements is not correct ?

A . Functional chromosomes can be created by joining segments of DNA taken from cells of different species

B . Pieces of Artificial functional DNA can be created in laboratories

C . A price of DNA taken out from an animal cell can be made to replicate outside a living cell in a laboratories

D . cells taken out from plants and animals can be made to undergo cell division in laboratory petri dishes

2. Which one of the following statements is not correct ?

A . Hepatitis B Virus is transmitted much like HIV

B . Hepatitis B, unlike Hepatitis C,does nat have a Vaccine

C . Globally, the number of people infected with Hepatitis B and C Viruses are several times more than those infected with HIV

D . Some of those infected with Hepatitis B and C Viruses do not show the symptoms for many years

3. Which of the following organisms have white blood ?

A . Lizard

B . Cockroach

C . House bug

D . Mosquito

4. Use of polished rice in human diet causees the folowing disease ?

A . Beriberi

B . Gotire

C . Colour Blindness

D . Night Blindness

5. Mother's milk provides almost complete diet to the new-bron but it lacks the following ___________

A . Iron

B . Calcium

C . Magnesium

D . Potassium

6. Which of the following is associated with biological nitrogen fixation ?

A . Red algae

B . Brown algae

C . Green algae

D . Bule-Green algae

7. The by-product of photosynthesis is _________

A . Co2

B . O2

C . Energy

D . Sugar

8. In persons addicted to alcohol the liver gets damaged because it ______________

A . Has to dotoxify the alcohol

B . Stores excess of glycon

C . is over stimulated to secrete more bile

D . Accumulates excess of fats

9. Which one of the following statements is correct ?

A . Bacteria contain cytoplasm but viruses do not

B . Bacteria contain mitochondria but Bacteria do not

C . Viruses contain mitochondria but Bacteria do not

D . Viruses have a cell membrane but Bacteria do not

10. Which one of the following will happen if the medium surrounding cell has a higher concentration than the cell ?

A . The cell will gain water

B . The cell will die

C . There will be no change

D . The cell will lose water

Biology

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