Answer: A
Explanation: Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow, and lets them get rid of waste products. This table shows examples of substances required by cell and associated waste products.
Answer:
The catabolic processes associated with the production of ATP are activated in order to supply its demand and to provide energy
.
Explanation:
Adenosine triphosphate (ATP) is the basic unit of energy in the cell, this molecule is used in many physiological processes including nerve impulse, muscle action, etc.
Answer:
C.
Explanation:
Here is a defintion of the immune system:
The major function of the immune system is to protect the host from environmental agents such as microbes or chemicals, thereby preserving the integrity of the body.
C. matches that definition nicely.
:)
Answer:
When it needs water it will release oxygen into the atmosphere. That makes more room for water and it can suck it up.
Explanation:
