2012-06-06

Biology Virus and Bacteria


Virus and Bacteria


1. Viral genes are made of
a. RNA only
b. DNA only
c. Either DNA or RNA
d. Either protein or nucleic acid

2. A virion is a
a. Virus
b. Viral ribosome

c. Viral lysosomes
d. Viral gene

3. An isolated virus is not considered living since it
a. Separates into tw inerts part
b. Cannot metabolize
c.  Rapidly loses its genome
d. Is coated with air-tight , chemically inert sheild

4. Most RNA viruses carry a gene for an enzyme that uses viral RNA as template in the synthesis of more viral RNA this enzyme is
a. Reverse transcriptase
b. RNA polymerase

c. Viral nuclease
d. RNA replicase

5. The enzymes involved in viral replication are synthesized
a. On the viral ribosome
b. By the host cell
c. On the interior surface of the viral membrane
d. On the interior surface of the viral coat

6. Much of the research on gene expression has been done with E.coli, which inhibits the human intestine.This organism is a
a. Plasmid
b. Virus
c. Bacterium
d. Protozoan

7. In general bacterial genes are regulated at the time of
a. Transcription
b. Post-transcription
c. Translation
d. Cojugation

8. When DNA is exchanged via eytoplasmic bridges between two bacteria the process is called
a. Transduction
b. Conjugation
c. Transformation
d. Recombination

9. When a bacteriophage in its lytic phase  carries some of the bacterium's partially digested chromosome with it to another host cell the process is called
a. Conjugation
b. Transformation
c. Transduction
d. Restricted transduction

10. A bacteriophage with a lysogenic cycle must have genes that are
--------------------------Continued on Entry Test Class -------------------------

We have made a more interactive website, 

You will get all right answer right after your answer, or test yourself and get answers on completing test.

 Your wrong answers are saved in your profile for review plus your stats will tell you which chapters you should repeat repeat. 


 For Complete Test and More MCQs join Entry Test Class. It will help you prepare better for your test.

6 comments:

  1. Strained pink in 16

    ReplyDelete
  2. kya ye sb thek hen

    ReplyDelete
  3. 32 c 31 c 30 b 29 c 28 a 27 c 26 d 25 a 24 c 23 a 22 b 19 c 18 a

    ReplyDelete
  4. 32 c 31 c 30 b 29 c 28 a 27 c 26 d 25 a 24 c 23 a 22 b 19 c 18 a 11d 10 b 12 a 13 a 14 d 15 d 16a 17b 1c 2a 3a 4d 5d 6c 7a

    ReplyDelete
  5. 32 c 31 c 30 b 29 c 28 a 27 c 26 d 25 a 24 c 23 a 22 b 19 c 18 a 11d 10 b 12 a 13 a 14 d 15 d 16a 17b 1c 2a 3a 4d 5d 6c 7a..plz tell about answer true r wrong

    ReplyDelete

Has a Question or Opinion?

Leave it here , we would like to hear from you and help you.



Related Posts Plugin for WordPress, Blogger...