Science question according to cell theory all cells have a nucleus all cells are differentiated all cells reproduce by mitosis all living organisms are composed of cells

Heyo, your answer would be D.) All living organisms are composed of cells.

The three parts of cell theory you should remember is that it's considered to be the smallest unit of life, secondly that all living organisms are made up of cells, and lastly that all cells come from other cells (non-spontaneous generation).

Therefore, the answer would be the last option.

Hi there! Your answer would be:

D. All living organisms are composed of cells.

Explanation:

Not all cells have a nucleus, in fact, an entire species called prokaryotes don't have any at all as a rule!

Also, Not all cells are differentiated. Differentiation is a process when a simple cell turns into a new different cell. Some cells stay simple their whole life.

Mitosis is the process when single-celled organisms split into 2 identical daughter cells. Mitosis only works in single-celled organisms.

Hope this helped!

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%