The Cell's Control Center: Order of Ideas

Which of these ideas comes first in the passage?

• A.For example, the nucleus is like the control center of the cell, where it…
• B.Understanding how cells work helps scientists learn about health, disease, and the environment.
• C.Every organism, from tiny bacteria to large trees and animals, is made up of…

What comes right after this sentence: “Another important organelle is the mitochondria, often called the powerhouse of the cell, because it produces energy for the cell to use.”

• A.Understanding how cells work helps scientists learn about health, disease, and the environment.
• B.Cells can be classified into two main types: prokaryotic cells, which do not have…
• C.Every organism, from tiny bacteria to large trees and animals, is made up of…