Answer:
The second stage.
Explanation:
Epinephrine is a hormone that is released by the glands over the kidneys that initiate a fight-or-flight response sequence in the body which starts with the segregation of the hormone and ends with the release of glucose into the bloodstream by the liver to provide energy required for the situation by the body.
The liver cells acts in the second stage of the epinephrine initiated signal with glycogen phosphorylase enzyme. The released epinephrine activates an enzyme called phosphorylase kinase and that in turn activates glycogen phosphorylase. Lastly glycogen phosphorylase reacts to epinephrine and releases another enzyme to remove the phospate from the glycogen phosphorylase group to form glucose that will be released into the bloodstream for energy.
I hope this answer helps.
CO2 is a relatively small non-polar molecule that can easily fit through the phospholipids in the plasma membrane without getting repelled by the hydrophobic core of the bilayer. Hence CO2 diffuses across the membrane without the aid of any intrinsic proteins (simple diffusion).
Amino acids however are large molecules that cannot fit through phospholipids in the bilayer. Hence, amino acids are most likely to diffuse across the cell plasma membrane with the help of channel and carrier proteins via facilitated diffusion.
You'll be able to make contrast and compare by reading both of them.
Dew point.
the temperature to which a parcel of air must be cooled to reach it saturation point.
Passive transport vs active transport sounds like what it is. In passive transport, there is no energy needed to get the molecules across the cell membrane, whereas in active transport, energy is expended getting the molecules across the membrane. Basically in active transport the ATP in your cells gives one of it’s phosphates to the transport proteins in your cell membrane and it lets select molecules in. These molecules are moving through a concentration gradient during active transport(with the help of ATP), from an area of low concentration to an area of high concentration.
