Answer:
The movement of molecules across a membrane without the input of energy is known as passive transport. When energy (ATP) is needed, the movement is known as active transport. Active transport moves molecules against their concentration gradient, from an area of low concentration to an area of high concentration.
Explanation:
got this from somewhere hope it helps. if its wrong im very sorry
Very sorry if this is wrong but I believe the answer is C!
Answer:
temporary
Explanation:
ice is just water in solid state, and melting it returns it to the liquid state. you can always re freeze water
Answer:
Yes
Explanation:
In contrast, meiosis gives rise to four unique daughter cells, each of which has half the number of chromosomes as the parent cell. Because meiosis creates cells that are destined to become gametes (or reproductive cells), this reduction in chromosome number is critical — without it, the union of two gametes during fertilization would result in offspring with twice the normal number of chromosomes!