ngAnswer:On a chromosome in the nucleus sorry if im wrong
Explanation:
Answer:
c. sodium-potassium pump
Explanation:
a. osmosis - this is a type at of passive transport. It is diffusion specific to water molecules.
b. diffusion - this is also a type of passive transport. Molecules move from a high concentration to a low concentration down a concentration gradient. This is passive transport and does not require energy.
c. A sodium-potassium pump is a type of active transport, it uses energy to move ions across the membrane. They cannot pass through the membrane because they are charged.
d, facilitated diffusion is a type of passive transport through which substances are transported through proteins in the plasma membrane.
Answer:
It doesn't have a high level of citric acid like a lemon or grapefruit would.
The correct answer is c.stops after infancy and childhood.
Myelin is the substance of the central nervous system (CNS) that insulates nerve cell axons to increase the speed at which nerve impulse travels. Myelination is a process of myelin formation. This process occurs postnatally, begins in the embryo during the midst of early development and finishes after birth.
Answer:
The plant could be a cacti or some other plant with spikes on the leaves.
Explanation:
