Answer:
Concentration, Temperature, Mass of Particle, Solvent /medium, surface area and permeability properties of membrane.
Explanation:
The random movement of particles causes the phenomenon called diffusion. The concentration gradients of particles pushes molecules in a direction such that molecules move from a region of high concentration to a region of lower concentration.
Diffusion is a passive process (not requiring the input of energy).
The following variables are factors that affects diffusion;
Concentration - down concentration gradient favours diffusion.
Temperature - temperature increases diffusion , the kinetic energy associated with each particle also increases.
Mass/size of Particle - Smaller particles on the other hand will diffuse faster because they can move faster.
Solvent /medium Properties - Viscosity and density of the medium greatly affect diffusion. Highly viscous and dense medium slows down diffusion.
Diffusion can occur through a membrane. The two factors that are particular to diffusion through a membrane are surface area and permeability.
Answer: probably all of them
Explanation:
Answer:
Explanation:
Bacteria grow most rapidly in the range of temperatures between 40 °F and 140 °F, doubling in number in as little as 20 minutes.
Answer:
d. with just a few nights of sleep deprivation, but recovery will take more than a month of normal sleep
Explanation:
During sleep, the body heals itself, wear and tear of cells occur, and the chemical balance of hormones and neurotransmitters is restored. During sleep, the body prepares cytokines, that are protection and infection-fighting substances. Sleep deprivation prevents the production of cytokines and the ability to fight and prevent infections decreases. Sleep also enhances the T-cell responses which are associated with lymphocyte production pathway. Hence, people who remain awake have a lesser T-cell count due to decrease activation of T-cells. Hence, a few nights of sleep deprivation makes the immune system lack behind in the T-cell response generation. This low T-cell activity does not only impede the production of immune system cells but also reduces the functioning of existing cells such as decrease in cytokine functioning. Hence, the entire immune system cells needs a double amount of sleep functioning to keep track of immune system responses and rebuild the cells.
