Answer:
AQUAPORINS dramatically increases the rate of diffusion of water across cell membranes.
Explanation:
Aquaporins are integral membrane proteins also called water channels that forms pores in the membrane mainly for facilitating diffusion of water molecules in and out of the cell. Aquaporins selectively allow the passage of water molecules while preventing the passage of ions and other solutes through it as they are impermeable to protons, and large solutes. These proteins therefore increases the permeability of the membrane to water molecules and the rate of diffusion of water increases through them. Flow of water molecules in aquaporins follows the direction of osmotic pressure across the membrane. Aquaporins in some organisms have been modified to voltage gated aquaporins which helps them to close the water channels in unfavorable conditions such as drought and flooding. This is to prevent excessive loss of water to the surrounding or intake of water into the cells.
Answer:
two people who are not going to be able to make it to the office and I will be there at the house and I will be there in a few minutes and I'll be there in a few
Answer:
Explanation:
in physics, the change in direction of a wave passing from one medium to another caused by its change in speed. For example, waves in deep water travel faster than in shallow.from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction in other words it can be all of them or i can narrow it down some more it can have a change in dirction when light enters into a traveling point for example after moving through air it passes through a prism called compare reflection
Answer:
r₂ = 4.43 r₁
Explanation:
To solve this exercise we must use Pascal's principle that the pressure at a point at a given depth is constant regardless of the body shape.
Let's use index 1 for the smallest plate and index 2 for the largest plate.
P₁ = P₂
pressure is defined
P = F / A
F₁ / A₁ = F₂ / A₂
A₂ / A₁ = F₂ / F₁
They indicate F1 = 40 N and the mass on the large plate is m₂ = 80kg
therefore the body weight is
W₂ = F₂ = m₂g
we substitute
A₂ / A₁ = m₂ g / F₁
A₂ / A₁ = 80 9.8 / 40
A₂ / A₁ = 19.6
the dishes are generally circular
A = π r²
A₂ / A₁ = π r₂² / π r₁²
A₂ / A₁ = (r₂ / r₁)²
we substitute
(r₂ / r₁)² = 19.6
r₂ / r₁ = √19.6 = 4.43
r₂ = 4.43 r₁
