Answer:
The correct answer is: a) osmosis.
Explanation:
- Osmosis can be defined as the physiological process by which molecules (in this case water) tend to move from a region where their concentration is high to a region where their concentration is low by the process of diffusion across a semi-permeable membrane.
- Active Transport can be defined as the physiological process in which molecules are forced to move from a region where their concentration is low to a region where their concentration is high across a semi-permeable membrane. This process requires the expenditure of energy and is usually mediated by carrier proteins or integral membrane proteins which span across the plasma membrane.
- Filtration can be defined as the physical process by which insoluble solute molecules are separated from the solvent molecules by the help of a porous filter paper which allows the solvent molecules to pass through it but restricts the insoluble solute molecules from passing through it.
- Diffusion can be defined as the physical process by which molecules tend to move from a region where its concentration is high to a region where its concentration is low. However, unlike osmosis, there is no semi-permeable membrane which separates the two regions.
It is called a population since they are all the same species
Answer:
D. High tides and low tides occur twice a day, and neap tides and spring tides occur twice a month.
Explanation:
Answer:True
Explanation:
Nerve impulse must reach a certain threshold in a neuron before action potential can be generated to intiate conduction of action potential.
Therefore if mutiple impulses are generated and these are not upto thresholds , no matter how strong the stimulI are-NO ACTION POTENTIAL WILL BE GENERATED.
THIS IS ALL OR NONE PRINCIPLE
The all or none hypotheses can be best explain with flushing of the water closet after using it. If required volume of water is not pumped into the water closet storage above, no matter how long the handle is push, FLUSHING WILL NOT TAKE PLACE.Thus the threshold volume of water must be met.
