Answer:
interaction between two different organisms living in close physical association, typically to the advantage of both.Compare with antibiosis.
a mutually beneficial relationship between different people or groups.
Explanation:
Most of the neuron cells in our brains are interneurons
Answer:
the digestive system absorbs nutrients from food.
the circulatory distributes these nutrients. this maintains a cycle of balance or homeostasis and keeps glucose levels relatively steady unless you have diabetes
Answer:
The Na⁺/Ca²⁺ exchanger, which couples the movement of Na⁺ down its electrochemical gradient with the movement of Ca²⁺ against its electrochemical gradient, is a(n) <u>symporter secondary active transport </u>because Ca²⁺ and Na⁺ move in different directions across the membrane.
Explanation:
The Na⁺/Ca²⁺ exchanger is a secondary active transport because it uses the energy of the Na⁺ that moves in favor of its electrochemical gradient to bring a Ca²⁺ ion against its electrochemical gradient inside the cell. This transport needs the help of a symporter, which is a protein that moves two different ions in the same direction.
