Answer:
There are two types of cell, prokaryotic (bacteria) and eukaryotic (animal, plant, fungi and protoctista (unicellular organisms)). Prokaryotes have no nucleolus – the DNA is in the cytoplasm, and it can from small circular strands of DNA called plasmids. Eukaryotic cells all have their DNA enclosed in a nucleus.
Explanation:
Cell membranes help organisms maintain homeostasis by controlling what substances may enter or leave cells
One way to reduce water consumption on farms is to use drip irrigation. Drip irrigation is a way of watering the plants in the farm directly to their roots. By this less water are consumed and you are sure that the plant really received the amount of water that they need.
This is referring to meiosis, which happens just once to make reproductive cells, unlike mitosis which is just simple copying.
In mitosis, one cell splits into two, but the number of chromosomes doesn't change. The original cell makes two copies of its chromosomes and divides them up.

In <em>meiosis</em>, however, our cell doesn't bother making those two copies. It just takes what it has and divides it between two new cells.
Light-independent reactions