Answer:
There are two main types of stem cells: embryonic stem cells and adult stem cells.Stem cells provide new cells for the body as it grows, and replace specialised cells that are damaged or lost. They can divide over and over again to produce new cells.
Answer:
The major difference between the two is that tortoises dwell on land, while turtles live in the water some or nearly all of the time.
Explanation:
https://www.diffen.com/difference/Tortoise_vs_Turtle
Against their concentration gradient means its active transport.
Diffusion is with the concentration gradient.
Osmosis is the movement of water.
The answer would be eukaryotic cells have membrane-bound compartments called organelles, whereas prokaryotic cells do not. hope this helps!! :D