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What are antibiotics? Write 3 Names antibiotics.
How nitrogen is fixed in nature ?
Answers
Answer:
What are antibiotics?
A medicine (such as penicillin or its derivatives) that inhibits the growth of or destroys microorganisms.
Write 3 Names antibiotics.
The main types of antibiotics include:
Penicillins - for example, phenoxymethylpenicillin, flucloxacillin and amoxicillin.
Cephalosporins - for example, cefaclor, cefadroxil and cefalexin.
Tetracyclines - for example, tetracycline, doxycycline and lymecycline.
Aminoglycosides - for example, gentamicin and tobramycin.
How nitrogen is fixed in nature ?
Nitrogen is fixed, or combined, in nature as nitric oxide by lightning and ultraviolet rays, but more significant amounts of nitrogen are fixed as ammonia, nitrites, and nitrates by soil microorganisms. ... Within the nodules, the bacteria convert free nitrogen to ammonia, which the host plant utilizes for its development.
An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of such infections. They may either kill or inhibit the growth of bacteria.
The main types of antibiotics include:
Penicillins - for example, phenoxymethylpenicillin, flucloxacillin and amoxicillin.
Cephalosporins - for example, cefaclor, cefadroxil and cefalexin.
Tetracyclines - for example, tetracycline, doxycycline and lymecycline.
Aminoglycosides - for example, gentamicin and tobramycin.
Nitrogen is fixed, or combined, in nature as nitric oxide by lightning and ultraviolet rays, but more significant amounts of nitrogen are fixed as ammonia, nitrites, and nitrates by soil microorganisms. ... Within the nodules, the bacteria convert free nitrogen to ammonia, which the host plant utilizes for its development.
Nitrogen fixation is the process by which nitrogen gas from the atmosphere is converted into different compounds that can be used by plants and animals. There are three major ways in which this happens: first, by lightning; second, by industrial methods; finally, by bacteria living in the soil.
The nitrogen gas is the free nitrogen whereas nitrogen compounds are said to be fixed(converted into nitrogen compounds). The nitrogen fixing Rhizobium bacteria lives in the root nodules of leguminous plants. ... Nitrogen gas of atmosphere also gets fixed through the action of lightning in the sky.