PLEASE HELP 7th grade science how do cell theory, cells, and organelles link and connect?

PLEASE HELP BY 9/20-9/21/20

They are all connected .

All living organisms on Earth are divided into cells. The main concept of cell theory is that cells are the basic structural unit for all organisms. Living things may be single-celled or they may be very complex such as a human being. There are smaller pieces that make up cells such as macromolecules and organelles.  A mitochondrion is an example of an organelle. If you were only made of one cell, you would be very limited. You don't find single cells that are as large as a cow.

Explanation ; easier so you can understand :)

We are made up of cells . The cell theory is that cells are what we are made of and the other animals and things in the world. Everything is made out of cells. The things that make up cells are orgenelles. That is how they are all linked up. Human > cells > oragenelles.

hope that helped :)

Cells have many structures inside of them called organelles. These organelles are like the organs in a human and they help the cell stay alive. Each organelle has it's own specific function to help the cell survive. The nucleus of a eukaryotic cell directs the cell's activities and stores DNA.

Explanation:

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.