click below
click below
Normal Size Small Size show me how
Biology
Ch. 4+5 Cells and Membrane
Question | Answer |
---|---|
What is the first unifying theory of biology? | Cell Theory |
Cells are...? (hint: 3 things) | fundamental units of life, all organisms are composed of cells, all cells come from pre-existing cells |
What are some important implications of cell theory? (hint: 2 things) | studying cell biology is the same as studying life and life is continuous |
Most cells are tiny in order to...? | Maintain a good surface area-to-volume ratio |
Volume and surface area of a cell determine....? | Volume of a cell determines its metabolic activity relative to time, and the surface ares of a cell determines the number of substances that can enter or leave the cell |
To visualize small cells you would need...? | light microscope or an electron microscope |
What does chemical analysis of cells involve? | Breaking cells open to make a cell-free extract |
Can the composition and chemical reactions of the extract be examined? | yes |
Are the properties |