The cell membrane is made up of a phospholipids that are arranged into two layers which are called lipid bilayer.
Answer:
D. First law of thermodynamics
Explanation:
The first law of thermodynamics refers that energy can be tranferred or changed form one form to another but it can neither be destroyed nor be created. hence, it is also known as law of conservation of energy.
The equation ΔU = Q − W describes the first law of thermodynamics.
Where
- U is the internl energy of the system.
- ΔU is the change in U.
- Q refers to the total heat supplied into the system (include both addition and release of energy in the system).
- W is the net work done by the system.
Hence, the correct option is D.
Answer: The digestive system breaks down food and the circulatory system transports nutrients to cells. Hope this helps.
Explanation:
