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Actinomycetes & Non Sporing Anaero.
Algae
Antibody
Antigen Antibody Reaction
Antimicrobial Chemotherapeutic Agent
Bacillus
Bacteria
Bacteria Morphology
Bacteriophages
Brucella
Cell Cultivations
Cell Cultures and Characteristics
Clostridium
DNA Replication
DNA Sequencing, Mutation and Repair
Energy Release and Conservation
Enzyme Reaction
Enzymes Regulation
Fish and Sea Foods
Food Illness
Fruits and Vegetables
Fungi - Molds and Yeasts
Heated Canned Foods
Hepatitis Viruses
Identification of Bacteria
Immune Response
Immune System
Industrially Useful Microbial Processes
Micro Organisms
Microbes in Aquatic Environment
Microbial Genetics
Microbial Metabolism
Microbial Recomb. & Gene Transfer
Microbiology of Foods
Microbiology of Soils
Microbiology of Waste Water
Microorganisms and Disease
Milk and Milk Products
Miscellaneous Foods
Mycobacterium
Nucleic Acid Structure
Physical and Chemical Agents
Polymerase Chain Reaction
Poultry, Egg and Meat
Poxviridae and Picronaviridae
Protozon
Pseudomonas and Burkholderia
Retroviridae
Rhabdoviridae, Caliciviridae & Astrovi.
Sauerkraut and Pickles
Spirochacter and Enterobacteriaceac
Staplylococcus
Streptococcus
Transcription
Translation and Regulation
Vibrio, Aeromonas and Plesiomonas
Viruses
Viruses From Animal and Plants
Viruses in Eukaryotes
Wine and Beer
Home⇒ Medical Science⇒ Microbiology⇒ Growth and nutrition of bacteria
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q21 ⇒ A spore differs from an actively replicating bacterium in that the spore all of the above [other wrong options] [Discuss in forum] is produced during a process involving asymmetric division is able to withstand more extreme conditions than the replicating cell is metabolically inactive |
Q22 ⇒ The microorganisms that grow best in a low-oxygen environment is called a (n) microaerophile [other wrong options] [Discuss in forum] aerobe anaerobe facultative |
Q23 ⇒ In the exponential phase, the cells and cell mass double at a constant rate [other wrong options] [Discuss in forum] first increases then decreases decreases are constant |
Q24 ⇒ The generation time of a culture that produces two generations per hour is greater than that produces three generations per hour [other wrong options] [Discuss in forum] lesser than that produces three generations per hour equal to that produces three generations per hour none of the above |
Q25 ⇒ The organism which grows best above 45°C are called thermophilic [other wrong options] [Discuss in forum] psychrophilic mesosphilic any of these |
Q26 ⇒ An organism that expends energy to grow in a habitat with a low water activity in order to maintain internal solute concentrations to retain water is osmotolerant [other wrong options] [Discuss in forum] acidophile aerotolerant anaerobe alkalophile |
Q27 ⇒ The cell reproduction in bacteria may occur by all of these [other wrong options] [Discuss in forum] binary fission budding fragmentation |
Q28 ⇒ Generation time is both (a) and (c) [other wrong options] [Discuss in forum] time required for the population to double time required for the initial adjustment obtained by expression t/n, where t = time interval, n = number of generation |
Q29 ⇒ Exponential phase of growth curve of bacteria is of limited duration because of all of these [other wrong options] [Discuss in forum] rise in cell density accumulation of toxic metabolites exhaustion of nutrients |
Q30 ⇒ Bacteria of genus Nitrosomonas use __________ as their electron source. ammonia [other wrong options] [Discuss in forum] H2S succinate light |
Q31 ⇒ The term obligate anaerobe refers to an organism that is killed by oxygen [other wrong options] [Discuss in forum] doesn't use oxygen but tolerates it uses oxygen when present or grows without oxygen when oxygen is absent prefers to grow without oxygen |
Q32 ⇒ Implicit factors both (a) and (b) [other wrong options] [Discuss in forum] depend on developing microflora can be synergistic none of the above |
Q33 ⇒ The straightforward method of binary fission explains how bacteria reproduce [other wrong options] [Discuss in forum] grow in nutrient agar evolve move |
Q34 ⇒ During exponential growth, the growth rate is reciprocal of generation time [other wrong options] [Discuss in forum] number of generations per unit time both (a) and (b) none of these |
Q35 ⇒ The term facultative anaerobe refers to an organism that uses oxygen when present or grows without oxygen when absent [other wrong options] [Discuss in forum] doesn't use oxygen but tolerates it is killed by oxygen requires less oxygen than is present in air |
Q36 ⇒ A culture broth tube was very turbid at the bottom of the tube but clear at the top of the tube indicating that the organism cannot produce superoxide dismutase and/or catalase [other wrong options] [Discuss in forum] broth is sterile organism can tolerate oxygen organism should be grown in an anaerobic chamber |
Q37 ⇒ All organisms require at least small amounts of carbondioxide, However, some can use CO2 as their sole source of carbon. Such organisms are termed as autotrophs [other wrong options] [Discuss in forum] phototrophs chemotrophs photo-organotrophs |
Q38 ⇒ The fragmentation occurs in Nocardia species [other wrong options] [Discuss in forum] Streptomyces species Bacillus subtilis None of these |
Q39 ⇒ Generation time of Escherichia coli is 20 minutes [other wrong options] [Discuss in forum] 20 hours 20 days 200 hours |
Q40 ⇒ The total biomass of an organism will be determined by the nutrient present in the lowest concentration relative to the organism's requirements is a statement of Liebig's law of the minimum [other wrong options] [Discuss in forum] Shelford's law of tolerance quorum sensing Heisenberg's principle of uncertainty |
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