1. The classification begun by Carl Woese was based on the comparison of:
- a) t-RNA sequences
- b) m-RNA sequences
- c) r-RNA sequences
- d) DNA sequences
2.On the basis of r-RNA classification, microbes are classified in which group?
- a) Bacteria, Archaea, Plantae
- b) Bacteria, Archaea, Monera
- c) Bacteria, Archaea, Eucarya
- d) All of the above
3.Which of the following is true for Archaea?
- a) They are non pathogenic
- b) Lack peptidoglycan in cell wall
- c) May be found in extreme environments
- d) All of the above
4.Which of the following is not true for bacteria?
- a) Usually have a single cell
- b) Contain peptidoglycan in cell wall
- c) All are highly pathogenic
- d) Found in abundance in soil, water and air
5.What is the significant production of Cyanobacteria?
- a) Water
- b) Sulfur
- c) Carbon dioxide
- d) Oxygen
6.Algae and photosynthetic protists together produce around __ % of Oxygen on earth:
- a) 35
- b) 45
- c) 75
- d) 85
7.Unicellular and animal like protists are known as:
- a) Virus
- b) Bacteria
- c) Algae
- d) Protozoa
8.Which of the following is not true for protozoa?
- a) Unicellular animal like protists
- b) Obtain nutrition by ingestion
- c) Found in intestinal tract of animals
- d) Acting as main foundation of aquatic food chains
9.In different stages of life cycle slime molds resemble:
- a) Protozoa and Algae
- b) Algae and Bacteria
- c) Protozoa and Fungi
- d) Fungi and Algae
10.Which of the following is not true for fungi?
- a) Ranges from unicellular yeast to multicellular mold
- b) Can cause disease to human and plants
- c) Mode of nutrition is ingestion
- d) Can decompose dead organic material
11.Which of the following is true for viruses?
- a) They are acellular entities
- b) Smallest of all microbes
- c) Always pathogenic
- d) All of the above
12.Which of the following is not true for viruses?
- a) They are obligate host parasites
- b) They lack cellular structure
- c) They are capable to cause cancer
- d) They are only pathogenic to humans
13.The first human disease proved to have a viral cause was:
- a) Rabies
- b) Smallpox
- c) AIDS
- d) Hepatitis
14.Which disease is caused by virus?
- a) Smallpox
- b) Rabies
- c) AIDS
- d) All of the above
15. Phycology is the study of:
- a) Fungi
- b) Algae
- c) Plants
- d) Bacteria