Answer: False.
Explanation:
Nitric oxide(NO) is a signalling molecule synthesised by NO synthase which is a a transmitter in the nervous system. Once it is produced, it diffuses out of the cell and act on nearby cells.
NO have a life time of few seconds and it is extremely unstable and highly reactive, it action is restricted.
The blood vessels uses it to signal the surrounding smooth muscle to relax.
Penicillin is an antibiotic produced by a fungus.
Explanation:
The only true statement from the given options is that penicillin is an antibiotic produced by a fungus. It is used to treat a wide range of microbial infection.
- Penicillin was discovered by Alexander Fleming in 1928
- Penicilium is a fungi mold grown by fermentation.
- The antibiotics restrict the activities of enzymes by inhibiting them.
- Antibiotics are not usually effective against virus
- Antimicrobial chemicals are usually toxic to humans.
- Antibiotic resistance is a serious problem in the health industry.
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Because they are made upf of different types of dit and rock. there location may affect this as well. if one was in a cave they might be larger. and a water source, like a lake, or rivier, they might be smaller. this is why usually around the bottom of lakes and oceans, you would find sand, not boulders.
