Lipids
Flashcard
•
Science
•
6th - 8th Grade
•
Hard
Barbara White
FREE Resource
Student preview
18 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Lipid Noun
[lip-id]
Back
Lipid
A class of biomolecules including fats, oils, and waxes that are non-polar and insoluble in water.
Example: This image shows a phospholipid, a type of lipid. It has a water-loving (hydrophilic) head and water-fearing (hydrophobic) tails, causing them to form a bilayer.
2.
FLASHCARD QUESTION
Front
Hydrophobic Adjective
[hy-dro-fo-bik]
Back
Hydrophobic
The property of a substance to repel or fail to mix with water, meaning it is 'water-hating'.
Example: This diagram attempts to show a lipid molecule, labeling the water-fearing (hydrophobic) part, but incorrectly calls the hydrophobic tails a 'head'.
3.
FLASHCARD QUESTION
Front
Fatty Acid Noun
[fat-ee as-id]
Back
Fatty Acid
A building block of lipids, consisting of a long hydrocarbon chain and a carboxyl group at one end.
Example: This diagram shows the structure of a fatty acid, which is a long chain of carbon and hydrogen atoms with a special 'carboxyl group' at one end.
4.
FLASHCARD QUESTION
Front
Glycerol Noun
[glis-er-ol]
Back
Glycerol
A three-carbon alcohol molecule that serves as the backbone for triglycerides and phospholipids.
Example: This image shows the chemical structure of a glycerol molecule, which has a three-carbon backbone with a hydroxyl (-OH) group attached to each carbon.
5.
FLASHCARD QUESTION
Front
Saturated Fatty Acid Noun
[sach-uh-ray-tid fat-ee as-id]
Back
Saturated Fatty Acid
A type of fatty acid in which all carbon-carbon bonds are single bonds, making it saturated with hydrogen atoms.
Example: This diagram shows a saturated fatty acid molecule, where the long carbon chain is 'saturated' with hydrogen atoms and has no double bonds.
6.
FLASHCARD QUESTION
Front
Unsaturated Fatty Acid Noun
[un-sach-uh-ray-tid fat-ee as-id]
Back
Unsaturated Fatty Acid
A type of fatty acid that contains at least one double bond in its hydrocarbon chain.
Example: This diagram shows an unsaturated fatty acid has at least one carbon-carbon double bond (C=C) in its chain, which creates a 'kink' or bend.
7.
FLASHCARD QUESTION
Front
Triglyceride Noun
[try-glis-er-ide]
Back
Triglyceride
The most common type of fat in food and the body, consisting of a glycerol molecule attached to three fatty acids.
Example: This diagram shows a triglyceride molecule is made of two parts: one glycerol 'backbone' (in blue) and three fatty acid 'tails' (in pink).
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