Microorganisms Friends and Foe Worksheet-5

Microorganisms Friends and Foe Worksheet-5

1. Viruses are made of:

(a) lipoprotein                               (b) glycosides

(c) nucleoprotein                          (d) lipids

2. The most important character which suggests that viruses are living is:

(a) viruses multiply only in living host

(b) their crystals have a definite shape

(c) viruses grow and multiply

(d) viruses may be crystallized

3. Bacterial virus is:

(a) cyanophage                             (b) bacteriophage

(c) mycophage                              (d) proteophage

4. Common cold is a:

(a) bacterial disease                    (b) viral disease

(c) protozoan disease                  (d) algal disease

5. Virus multiplies in:

(a) culture medium                     (b) dead tissue

(c) living tissue                              (d) none of these

6. Bacteriophage gets attached to the host cell with the help of:

(a) tail sheath   (b) tail fibres     (c) spikes           (d) collar

7. Which of the following is a viral dis­ease?

(a) AIDS                                         (b) Tetanus

(c) Whooping cough                    (d) Cholera

8. The vector of malaria fever is:

(a) Culex            (b) Aedes           (c) Anopheles   (d) All of these

9. Which of the following is a protozoan disease?

(a) Tetanus                                    (b) Measles

(c) Filariasis                                  (d) Sleeping sickness

10. The disease caused by virus which af­fects the liver cells and damages the bilirubin releasing cells is:

(a) influenza     (b) measles       (c) hepatitis       (d) polio

Answer Key:

(1)-(c); (2)-(a); (3)-(b); (4)-(b); (5)-(c); (6)-(b); (7)-(a); (8)-(c); (9)-(d); (10)-(c)