Multiple Choice QuestionsWhich of the following gland is often referred in relation with AIDS
Thyroid
Thymus
Adrenal
Pancreas
Which one of the following bacterium is used extensively as biopesticide?
Bacillus subtilis
Bacillus thuringiensis
Streptococcus lactis
Lactobacillus acidophilus
Increase of BOD in water leads to
increase in the dissolved O2 concentration
decrease in the dissolved O2 concentration
maintenance of dissolved O2 concentration at the same level
no effect on dissolved O2 concentration
Genetically engineered bacteria are being employed for production of
thyroxin
human insulin
cortisol
epinephrine
Which one of the following is biological insecticide?
Tiger beetle
Caterpillar
Silkmoth
Mazra poka
Which of the following statement(s) are true?
Antibiotics can kill bacteria, but disinfectants do not
Disinfectants have better bactericidal efficiency than antibiotics
Antibiotics are of microbial origin, but disinfectants are chemical compounds
Antibiotics can be injected into the patients, whereas disinfectants are not
B.
Disinfectants have better bactericidal efficiency than antibiotics
C.
Antibiotics are of microbial origin, but disinfectants are chemical compounds
D.
Antibiotics can be injected into the patients, whereas disinfectants are not
Antibiotics are the agent used for living beings to kill or inhibit the growth of microorganisms in them. They are of microbial origin and can even be injected into the patients. While, disinfectans are the substances being applied to the non-living objects to destroy microorganisms that are living on the objects. They does not necessarily kill all microorganism. They are more potent bactericidal agents having more efficiency than antibiotics. They are chemical compounds that cannot be injected into the living being or patients.
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