Answer:
Advantage
1)Faster and more certain method of propagation.
2)Quicker and more certain.
3)Produces identical quality as the parent.
4)Plants that do not have viable seed, can be reproduced.
5)Flowers produced are of superior quality.
Disadvantages
1Does not produce new variety.
2Leads to overcrowding around the parent plant.
3Very little possibility of dispersal.
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Answer;
-Pumps require energy for transport because they move material against an electrochemical gradient, but channels and carriers do not use energy because they only facilitate diffusion down a molecule's or ion's electrochemical gradient.
Explanation;
-Permeability is conferred by two classes of membrane proteins, pumps and channels. Pumps use a source of free energy such as ATP or light to drive the thermodynamically uphill transport of ions or molecules. Pump action is an example of active transport.
-Channels, in contrast, enable ions to flow rapidly through membranes in a downhill direction. Channel action illustrates passive transport, or facilitated diffusion.
The answer is Phencyclidine or PCP. It was was developed in
the 1950s as a general anesthetic for surgery. It’s no longer used now due to
serious side effects. It could be any white powder, crystal, capsules, tablets,
or liquid. Taking great dosages of PCP can result to seizures, coma, and death.
But death more often came from accidental injury or suicide during PCP
intoxication.