Understanding Biology

Kenneth A. Mason, Tod Duncan, George B. Johnson

Chapter 4 Cell Structure - all with Video Answers

Educators

Section 1

All Living Organisms Are Composed of Cells

01:16

Problem 1

Which of the following statements is NOT part of the cell theory?
a. All organisms are composed of one or more cells.
b. All cells come from other cells by division.
c. Cells are the smallest living things.
d. All cells are composed of molecules and organelles.

Joanna Quigley

Numerade Educator

01:55

Problem 2

The most important factor that limits the size of a cell is the
a. quantity of proteins and organelles a cell can make.
b. concentration of water in the cytoplasm.
c. surface-area-to-volume ratio of the cell.
d. amount of DNA in the cell.

Joanna Quigley

Numerade Educator