BIOLOGY Practice Test by Studybizz

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BIOLOGY Practice test by Studybizz

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1. The genetic material of HIV is

a) DNA

b) RNA

c) Both DNA & RNA

d) Either DNA or RNA

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2. Which of the following is a rod shape virus

a) HIV

b) TMV

c) Bacteriophage

d) Bacillus

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3. Which of the following is a pleomorphic bacteria

a) Rhizobium

b) Acetobacter

c) Clostridium

d) All of these

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4. Which of the following organelle is present in bacteria?

a) Mitochondria

b) Chloroplast

c) Ribosome

d) Lysosome

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5. Pencillin was discovered in ____

a) Virus

b) Bacteria

c) Plant

d) fungi

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6. The target cell of HIV is _________

a) R.B.C

b) W.B.C

c) Platelets

d) All of the above

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7. Which of the following is a waterborne disease caused by virus?

a) Hepatitis A

b) Hepatitis B

c) AIDS

d) All of the above

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8. Which of the following cannot begrown on artificial medium?

a) Virus

b) Bacteria

c) Fungi

d) All of the above

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9. The target cell of polio virus is _____?

a) Motor nerve cell

b) Liver cell

c) Erythrocyte

d) Lymphocyte

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10. The number of morphological types of bacteria and cells respectively found in a test tube which contains 20 Monococci, 10 Monobacilli, 10 Diplococci, 30 Tetracocci and 10 Sarcina are

a) 5 and 300

b) 2 and 250

c) 2 and 320

d) 4 and 330

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11. Staphylococcus bacterium is a

a) Chain-like colony

b) Plate-like colony

c) Bunch-like colony

d) Cube-like colony

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12. Which of the following is not correct?

a) Coccus-Spherical

b) Bacillus-Rod-shaped

c) Vibrio-T-shaped

d) Spirillum-Spiral

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13. Bacteria bearing only one flagellum at the body is called

a) Monotrichous

b) Peritrichous

c) Cephalotrichous

d) Atrichous

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14. Fimbriae and pili are short filamentous structures composed of protein

a) Flagellin

b) Tubulin

c) Pilin

d) Actin

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15. The cell wall of bacteria consists of

a) N-acetyl glucosamine

b) N-acetyl muramic acid

c) Both (A) and (B)

d) Cellulose

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16. Food poisoning is caused by the infection of

a) Bacillus megaterium

b) Salmonella typhi

c) E.coil

d) Clostridium botulinum

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17. ‘Crown gall’ disease is caused by

a) Mycobacterium

b) Agrobacterium tumefaceiens

c) Erwinia

d) Clostrdium

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18. Waksman got the Nobel Prize for the discovery of

a) Pencillin

b) Chloromycetin

c) Streptomycin

d) Neomycin

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19. The germ theory of disease was proposed by

a) Koch

b) Pasteur

c) Both(A) and (B)

d) Devaane

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20. Bacterial cell contains

70S ribosomes II. 80S ribosomes

III. Plasmids IV. Mitochondria

a) I, II and III

b) II and IV

c) I and IV

d) I and III

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21. Organisms called methanogens are most abundant in a

a) Cattle yard

b) Polluted stream

c) Hot spring

d) Sulphur rock

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22. Select the wrong statement

a) W.M. Stanley showed that viruses could be crystallized

b) The term 'contagium vivum fluidum' was coined by M.W. Beijerinek

c) Mosaic disease in tobacco and AIDS in human being are caused by viruses

d) The viroids were discovered by D.J. Ivanowsky

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23. Chlorobium is an example to

a) Photo autograph

b) Chemo autograph

c) Photo heterotroph

d) Chemo heterotroph

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24. Given below is the diagram of a bacteriophage. In which one of the options all four parts A, B, C and D are correct?

a) A: Tail fibres, B: head, C: Sheath, D: Collar

b) A: Sheath. B: Collar, C: Head, D: Tail fibres

c) A: Head, B: collar, C:Sheath, D: Tail fibres

d) A: Collar, B: Tail fibres, C: Head, D: Sheath

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25. Select the total number of diseases from the following caused by bacteria:

Mumps, Smallpox, Citrus canker, Cholera, Typhoid, Tetanus, Sleeping sickness, Malaria

a) 2

b) 4

c) 5

d) 6

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The average score is 35%

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BIOLOGY Practice Test by Studybizz

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