Diffusion and it does not have to be through a semi permeable membrane.
An electron gradient.
endocytosis. takes in surroundings by spreading plasma membrane and engulfing the area
electrical or chemical signals may control the movement of ions across cell membrane
A base is the opposite of an acid. Why? Because an acid can donate a hydrogen ion while a base accepts, or takes, a hydrogen ion from other substances. Therefore, if you mix them you will get a neutral result.
Anti-parallel
Opposite leaves are opposite each other, on opposite sides of the plant stem. Alternate leaves are on opposite sides of the stem but they are higher or lower than each other - not opposite
Aerobic respiration is the difference in H+ concentrations on opposite sides of the inner mitochondrial membrane. This is taught in science.
Outside the cell is high concentration of hydrogen ions and low concentration of sucrose. Inside, is the opposite, low concentration of hydrogen ions, and high concentrations of sucrose. Cells use ATP to pump a hydrogen ion across the cell membrane, against the concentration gradient, and when the hydrogen ion goes to re-enter, it goes through a Sucrose-proton cotransporter. This means that the hydrogen ion (proton) take a sucrose molecule with it when it goes though the membrane.
If you mean the opposite of passive transport, like through a membrane, the opposite is active transport.
It is the extra-Cellular matrix - opposite of the intra-membrane space, the Cytoplasm.
It is the extra-Cellular matrix - opposite of the intra-membrane space, the Cytoplasm.
There is no difference Opposite is a synonym of antonym
The difference in H+ concentrations on opposite sides of the inner mitochondrial membrane. During oxidative phosphorylation, NADH and FADH oxidizes at the hydrogen carriers to provide electrons to the electron transport chain (etc) (chain of electron carriers) and H+ ions. As electrons pass through the etc, ATP is synthesized. If energy is ever needed along the process, ATP is used. But i doubt it as the electron do not require external chemical energy to move along the carriers.
no, this is false it forms a hydrogen bond.
the opposite of a sum is the difference
cell membrane pumps use energy to force molecules in a direction opposite of natural.
An antiporter is a cell protein which acts within an antiport to transport different molecules or ions across the membrane in opposite directions.
No, energy is produced by the opposite reaction, hydrogen to helium