MDCAT Biology Chapter 3 MCQ's Test With Answers

MDCAT Biology Chapter 3 MCQ's Test

Sr. # Questions Answers Choice
1 Which of following is anaerobic bacteria: Pseudomonas Escherichia coli Spirochaeta Campylobacter
2 Cell walls of archaeobacteria are different from: Probacteria Cyanobacteria Actinobacteria Eubacteria
3 Microbiologists place bacteria in two major categories: Eubacteria and: Probacteria Cyanobacteria Actinobacteria Archaebacteria
4 Thick walled, enlarge vegetative cells which accumulate food and become resting cells in Nostoc are: Heterocysts Akinetes Cysts Spores
5 Nostoc is common terrestrial and subaerial: Bacteria Plant Cyanobacteria Algae
6 Cyanobacteria have heterocysts, which are helpful in the fixation of atmospheric: Carbon Nitrogen Hydrogen Oxygen
7 Phycobilins is used as accessory pigments by: Cyanobacteria Bacteria Algae Fungi
8 Tetracycline and its related compounds cause permanent discoloration of: Skin Hair Nose and ear Teeth
9 Chemotherapeutic chemical substances which are used in treatment of infectious disease are: Antibodies Antigens Antibiotics Disinfectants
10 About 1880 Pasteur isolated the bacterium, responsible for: Rabies Chicken cholera anthrax Small pox
11 Chemotherapeutic agents and antibiotics work with natural defence and stop the growth of bacteria and other: Microbes Birds Arthropods Algae
12 some bacteria transfer genetic material from a donor bacterium to a recipient during a process called: Binary fission Budding Regeneration Conjugation
13 Some bacteria require a low concentration of oxygen for growth and are known as: aerobic Anaerobic Microaerophilic Facultative
14 Spirochete is: Aerobic bacterium Anaerobic bacterium Obligate bacterium Facultative bacterium
15 Bacteria which get their food from dead organic matter are: Parasitic Saprophytic Symbiotic Chemosynthetic
16 During photosynthesis photosynthetic bacteria liberate sulphur instead of: Oxygen Carbon dioxide Nitrogen Chlorine
17 During photosynthesis photosynthetic bacteria use hydrogen sulphide instead of water as: Carbon source Nitrogen source Hydrogen source sulphur source
18 Mesosomes are involved in: DNA Replication Cell division RNA relication Both a & b
19 Nucleoid is visible in the light microscope after staining with: Gram stain Feulgen stain Eosin stain Haematoxylin
20 The cell membrane or cytoplasm membrane is 5-10nm in: Thickness Length Width Diameter
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