Answer:
The answer is C. Nonpolar ends of phospholipids are exposed to watee inside and outside the cell
Answer:
b
Explanation:
The answer is B becuase "where do people buy tools is not a scientific question, and neither is C.
Answer:
Hormones act as first messenger but not as second messengers.
Explanation:
Second messenger act as signaling molecule which are secreted in response to various biological signals generated by first messenger such as hormones,neurotransmitters etc.Second messengers include various bioactive molecules such as cyclic AMP(cAMP),cyclic GMP(cGMP),inositol triphosphate(IP3),diacylglycerol(DAG),calcium ions(Ca2+) etc.
Hormones are extracellular signaling molecules whereas second messengers are intracellular signaling molecules.
Answer:
•The hydrolysis of ATP to drive a thermodynamically unfavorable reaction.this process is ATP coupling
Explanation:
For example, the conversation of glucose to glucose -6-phosphate.
