Well because we can see them in microscopes !!
they are produced in the nucleus of cells. a human has 23pairs of chromosomes.
Every single part of your body is made of cells. All parts of all living things as we know exist are composed of cells. Cells are the most basic living unit from which all other life comes from.
Yes, mitochondria exist in animal cells.
As far as I know, pretty much everywhere. Bacteria cells don't have a nucleus, they have something in the middle, which I don't know what it is, and then lots of ribosomes scattered around....Actually, maybe they don't even have ribosomes. Sorry I can't be of more help.
yes
We have microscopes.
they are produced in the nucleus of cells. a human has 23pairs of chromosomes.
So that our cells will know how to make the proteins that they must make to exist.
You wouldn't exist, every part of you is made up of cells. If you had no cells you wouldn't exist.
Life as we know it depends on liquid water to sustain life.
billions iof convection cells exist there could be millions billions
decibe an organism that can exist only as a group of cells
specialized cells
Every single part of your body is made of cells. All parts of all living things as we know exist are composed of cells. Cells are the most basic living unit from which all other life comes from.
yes
red cells
I know I exist, and you know you exist, and I know that you know you exist. Thereby we each both exist, and thus from all perspectives, yes, I exist. Sure I do. But, meh, why is this question here?