41. All the following are basic properties of cells except

A. cells have nuclei and mitochondria
B. cells have a genetic program 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: A. cells have nuclei and mitochondria

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

A. Cyanobacteria
B. Methanobacteria
C. Trichomonads
D. Mycoplasma


Correct Answer: B. Methanobacteria

43. The idea of selective toxicity was first proposed by

A. Antony van Leeuwenhoek
B. Paul Ehrlich
C. Louis Pasteur
D. Alexander Fleming


Correct Answer: B. Paul Ehrlich

44. Which of the following sequences has helped in identifying eukaryotes, eubacteria and archaebacterial cell types?

A. Signature sequence
B. Signal sequence
C. Shine-Dalgarno sequence
D. Amino acid sequence


Correct Answer: A. Signature sequence

45. Archeal cells usually do not contain peptidoglycan, rather contain pseudo-peptidoglycan which is mainly composed of

A. N-acetylmuramic acid and L-amino acids
B. N-acetylmuramic acid and D-amino acids
C. N-acetyltalosaminuronic acid and D-amino acids
D. N-acetyltalosaminuronic acid and L-amino acids


Correct Answer: D. N-acetyltalosaminuronic acid and L-amino acids

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