Microorganisms Questions & Answers - Page 5

21.

The idea of selective toxicity was first proposed by

A.

Antony van Leeuwenhoek

B.

Paul Ehrlich

C.

Louis Pasteur

D.

Alexander Fleming

Correct answer is B

No explanation has been provided for this answer.

22.

Which of the following microorganisms is classified as a member of archaebacteria?

A.

Gyanobacteria

B.

Methanobacteria

C.

Trichomonads

D.

Mycoplasma

Correct answer is B

No explanation has been provided for this answer.

23.

All the following are basic properties of cells except

A.

cells have nuclei and mitochondria

B.

cells have a genetic programme and the means to use it

C.

cells are capable of producing more of themselves

D.

cells are able to respond to stimuli

Correct answer is A

No explanation has been provided for this answer.

24.

Prokaryotic microorganism include

A.

protozoa

B.

fungi

C.

bacteria

D.

all of these

Correct answer is C

No explanation has been provided for this answer.

25.

Who discovered the bacteria that cause cholera?

A.

Pierre Berthelot

B.

Robert Koch

C.

Louis Pasteur

D.

Rudolf Virchow

Correct answer is B

No explanation has been provided for this answer.