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cells
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Cells Ch. 2.1
http://koning.ecsu.ctstateu.edu/cell/cell.html
Focus Questions
1. What is cell theory?
2. What basic substances make up cells?
3. Why are macromolecules important to a cell?
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
Definition of Cell
A cell is the smallest unit that is capable of performing life
functions.
Which is NOT part of the cell theory?
A. B. C. D.
0% 0%0%0%
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
45
Examples of Cells
Amoeba Proteus
Plant Stem
Red Blood Cell
Nerve Cell
Bacteria
Which is NOT a macromolecule?
A. B. C. D. E.
0% 0% 0%0%0%
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
E. Water
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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
DNARNA
enzymeshair (horns,feathers)
fatsoils
sugarsstarchcellulose
Importance to the cell
• dissolves substances
• insulates
• carryhereditaryInformation
• used tomakeproteins
• regulatecellProcesses
• providestructuralsupport
• store largeamounts ofEnergy
• formProtective barrieraroundCells & cell parts
• supply energyfor cellprocesses• providestructuralsupport
2. What basic substances make up cells?
Which substance contains amino acid?
A. B. C. D. E.
0% 0% 0%0%0%
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
E. Water
45
Which 2 macromolecules store energy?
A. B. C. D.
0% 0%0%0%
A. Carbohydrates & Proteins
B. Lipids & Proteins
C. Nucleic Acids & Lipids
D. Lipids & Carbohydrates
45
Which substance acts as a protective barrier?
A. B. C. D. E.
0% 0% 0%0%0%
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
E. Water
45
Which substance is made up of sugars?
A. B. C. D. E.
0% 0% 0%0%0%
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
E. Water
45
Which substance makes up 70% of the cells volume?
A. B. C. D. E.
0% 0% 0%0%0%
A. Carbohydrates
B. Lipids
C. Nucleic Acids
D. Proteins
E. Water
45