The cell membrane separates the intracellular environment from the extracellular environment outside of the cell. A phospholipid is composed of a phosphate group and a lipid. It is composed of a hydrophilic, polar phosphate head and two hydrophobic fatty acid tails.
The structure of the bilayer is such that the tails are shielded from contact with water, creating a selectively-permeable barrier which will be impermeable to most hydrophilic molecules.
So, the answer is A) To maintain balance of water and nutrients in the cell.
The correct answer would be nuclear energy. The other answers would be fossil fuels because they are naturally made.
The endoplasmic reticulum is the answer
(Side note: haha I just finished this for a class today)
Explanation:
There are many things to define something as living such as certain properties. There properties might include things such as growth and development, there energy source, response to the environment, there internal balance, and reproduction.
These all have a big role in telling us whether something is living or nonliving. What it means to be living is to have certain characteristics nonliving organisms might not have. Like flowers there energy source would be the sun, they grow with water and the sun, and response to the environment could mean like how some flowers grow towards the sun, flowers reproduce with their seeds. To be living is to have everything working together in the right spots at one time. Like how your different body systems work together to keep you alive. (reminder: live your life to the fullest because everything doesnt last forever :)) )
Answer:
Cancer is a disease that causes people to fight for their lives.It is part 9f the cell cycle because some people are born with it and some get it when they get older.
