MDCAT Biology Chapter 3 MCQ's Test With Answers

MDCAT Biology Chapter 3 MCQ's Test

Sr. # Questions Answers Choice
1 The medicine which inhibits the reproductive capacities of micro-organisms has which effect? Microbicidal Microbistatic Antibiotic Disinfectant
2 Chemotherapeutic agents which work with natural defense and stop the growth of bacteria Antiseptics Disinfectants Electromagnetic radiation Antibiotics
3 What are in general used for sterilization process Halogens Gamma rays Potassium permanganate Formaldehyde
4 In bacterial 'growth curve' the phase of no growth is Lag phase Log phase Stationary phase Decline phase
5 Green sulfur bacteria and purple non-sulfur bacteria are examples of which bacteria Chemosynthetic Parasitic Photo synthetic Saprophytic
6 The structure produced in adverse environment and resistant to heat are known as Endopores Cysts Spores Mesosomes
7 Of the following which one is not characteristics of mesosomes They contain respiratory enzymes They are involved in gene expression They are in DNA replication They are involved in the formation of lamellae
8 The cell membrane of bacteria is different from that of eukaryotic, in lacking Sterols Fats Lipids None of these
9 Of the following which one is not the constituent of cell wall in eubacteria Proteins Teichoic acid Lipopolysaccharides Peptidoglycan
10 True pilli are only present on Gram -ve bacteria Gram +ve bacteria Mycoplasma All of these
11 The response of chemical signals by flagellated bacteria is known as Chemonastic Chemotropism Chemotaxis None of these
12 In eukaryotes flagella originate from Basal bodies Cell wall Cell membrane Cytoplasm
13 Extremely thin hair like appendages of bacteria are known as Cilia Flagella Fimbrae All of these
14 Sarcina is made up of how many cocci 4 8 12 6
15 A curved or comma shaped rod is known as Vibrio Diplobacillus Streptobacillus None of these
16 The bacteria larger than the average eukaryotic cell is Epulopiscium nigrofuscus Acanthurus nigrofuscus Epulopiscium fishelsoni Acanthurus fishelsoni
17 Poxviruses have a size equal to some members of Mycoplasma Staphylococci Acanthurus nigrofuscus Epulopiscium fishelsoni
18 Of the following which one is not found in all bacteria Chromatin bodies Ribosomes Cell membrane Cell wall
19 Anthrax is sheep is caused by Cocci Bacilli Spirilla Vibrio
20 Many __________ viruses enter the host cell as a whole Plant Polyhedral Cubical Animal
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