2. Focus Questions
1. What is cell theory?
2. What basic substances make up cells?
3. Why are macromolecules important to a
cell?
3. 1. What is cell theory?
Cell theory
All living things
have cells
Cells are the
smallest unit of
life
All cells come
from preexisting
cells
4.
5. Definition of Cell
A cell is the smallest unit that is
capable of performing life
functions.
6. Which is NOT part of the cell
theory?
0% 0% 0% 0%
A. B. C. D.
A. All cells come from
preexisting cells
B. All cells contain a
nucleus
C. All living things
have cells
D. Cells are the
smallest unit of life
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7. Examples of Cells
Amoeba Proteus
Plant Stem
Red Blood Cell
Nerve Cell
Bacteria
8. Which is NOT a macromolecule?
0% 0% 0% 0% 0%
A. B. C. D. E.
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
E. Water
45
9. 2. What basic substances make up cells?
Macromolecules
Water Nucleic
Acids
Proteins Lipids Carbohydrates
Definition Water
makes up
___% of a
cell’s
volume
Long
chains of
nucleotides
Long chains
of Amino
acids
Large
macromolecule
that does not
dissolve in
water
Sugar molecules (1, 2,
or long chain)
Examples DNA
RNA
enzymes
hair (horns,
feathers)
fats
oils
sugars
starch
cellulose
Importanc
e to the
cell
• dissolves
substances
• insulates
• carry
hereditary
Information
• used to
make
proteins
• regulate
cell
Processes
• provide
structural
support
• store large
amounts of
Energy
• form
Protective
barrier
around
Cells & cell
parts
• supply energy
for cell
processes
• provide
structural
support
10. Which substance contains
amino acid?
0% 0% 0% 0% 0%
A. B. C. D. E.
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
E. Water
45
11. Which 2 macromolecules store
energy?
A. Carbohydrates & Proteins
B. Lipids & Proteins
C. Nucleic Acids & Lipids
D. Lipids & Carbohydrates
0% 0% 0% 0%
A. B. C. D.
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12. Which substance acts as a
protective barrier?
0% 0% 0% 0% 0%
A. B. C. D. E.
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
E. Water
45
13. Which substance is made up of
sugars?
0% 0% 0% 0% 0%
A. B. C. D. E.
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
E. Water
45
14. Which substance makes up
70% of the cells volume?
0% 0% 0% 0% 0%
A. B. C. D. E.
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
E. Water
45
Editor's Notes
elodea
300 yrs ago, Robert Hooke built a microscope and used it to look at cork. He saw what looked like small openings, which reminded him of small rooms (cells). Cellula in Latin means small rooms. Cell theory is based on observations made by three different scientists: Schleiden, Schwann, & Virchow.
(cork image)
