Their atoms are physically connected together to form different structures
Answer:
Cellular Respiration occurs when cells use oxygen to produce energy from food you eat.
Answer:
first, to be a barrier keeping the constituents of the cell in and unwanted substances out and, second, to be a gate allowing transport into the cell of essential nutrients and movement from the cell of waste products.
Explanation:
Answer:
The mode of signaling is called Endocrine signaling
Explanation:
Endocrine signaling can be defined as the process whereby chemicals called hormones released by the endocrine glands into the blood stream.
Endocrine signaling has a slow effect on the cells of the body. This effect can also be a long lasting effect as well.
For Endocrine signaling to work, receptors are needed. Examples of these receptors are:
a. Intracellular receptors
b. Surface cell receptors
In Endocrine signaling, when the hormones are released they bind to the receptors of the target cells that requires the hormones to function.