Lipids and Elements of Life: Formative Assessment
Name: _______________________________________Per: _______ Date: _______________Total:
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Learning Goals
A. Understand the elements that make up a living cell and how their properties impact life.
LG-A: 1-2-3-4
B.
LG-B: 1-2-3-4
Understand the structure and function of different types of lipids.
Score 2:
1. (LG B ) Which of the following is an example of a type of triglyceride?
a. Unsaturated fat
c. Monounsaturated fat
b. Saturated fat
d. All of the above
2. (LG B ) Which type of lipid makes up the majority of the cell membrane?
3.
a. phospholipids
c. steroids
b. waxes
d. triglycerides
(LG B ) What is the function of a triglyceride (fat)?
a. Stores and transfers genetic information
c. Control the rate of reactions
b. Long term energy storage
d. Help to fight disease
4. (LG B ) Phospholipids have a:
a. hydrophobic head and hydrophilic tail
5. (LG B ) Which is NOT a function of lipids?
a. protective coatings such as in the
cell membrane of cells
b. quick energy source
b. hydrophilic head and hydrophobic tail
c. long-term energy source
d. insulation
6. (LG A ) Which of the following is NOT one of the main elements found in living organisms?
a. Hydrogen
c. Neon
b. Phosphorous
d. Nitrogen
7. (LG A and B ) Long chains of these elements make up fatty acids in lipids:
a. Carbon & Hydrogen
c. Oxygen & Nitrogen
b. Nitrogen & Sulfur
d. Phosphorous & Sulfur
8. (LG B ) Sex hormones, cholesterol, and vitamins are all examples of
a. triglycerides
c. waxes
b. steroids
d. phospholipids
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Lipids and Elements of Life: Formative Assessment
9. (LG B ) Fats that have double bonds between carbon atoms in their fatty acid chains and are liquid at
room temperature are called
a. Saturated fats
c. Unsaturated fats
b. Trans-fats
d. Phospholipids
10. (LG B ) Which of the following describes the basic structure of a triglyceride?
a. 3 glycerol molecules attached to a fatty acid chain
b. 3 fatty acid chains attached to a phosphate head
c. 3 fused carbon rings attached to a fatty acid chain
d. 3 fatty acid chains attached to a glycerol molecule
11. (LG-A) Organic macromolecules such as proteins, carbohydrates, and lipids are all based on carbon.
a. List the other 5 elements that make up these organic molecules.
CHNOPS – Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorous, Sulfur
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Score 3:
b. Why is Carbon such a useful element in making macromolecules? Explain by referencing
carbon’s unique bonding properties (hint: valence electrons).
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Carbon makes bonds easily. Carbon has four valence electrons. This makes it useful in forming large
molecules with other elements.
12. (LG-B) Draw a phospholipid and label its parts. Next to your picture, explain how phospholipids interact
with water. Explain using the following terms (polar, non-polar, hydrophilic, hydrophobic).
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Phosphate Head – Polar and Hydrophilic
Fatty Acid Tails – Non-polar and Hydrophobic
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