Explanation:
1. cell membranes are partialy permeable, only allowing passage to some certain molecules.
2. diffusion is the movement of molecules across partially permeable membrane down concentration gradient.
3. the molecules are too big to pass through partially permeable membrane. the concentration of the molecule might be higher in the cell than in the solution/surroundings.
Biological structures like DNA, proteins and cells all depend on molecules. ... Neurotransmitters like epinephrine are pretty simple molecules, but without them our nervous system couldn't work. Oxygen, containing just two oxygen atoms, is a very simple molecule, and it is certainly essential to living things.
Mouth assessment is perform to check a person’s health.
Upon examining, the soft palate is moist and pink with whitish spots, which may
indicate an infection usually tonsillitis. The person must be advised to visit
a physician for a healthy soft palate must be free from any spots or patches and pain.
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It is true that situational context is the social and environmental setting in which a particular behavior takes place.
Most fearures of the earth si terristrial, thick, out layer
