Multiple Choice
Which type of lipid primarily provides long-term energy storage for animals?
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4. Biomolecules
Lipids
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Which type of fatty acids only contain Carbon-Carbon single bonds?
A
Unsaturated.
B
Saturated.
C
Trans fats.
D
Steroids.
Verified step by step guidance1
Understand the basic structure of fatty acids: Fatty acids are long hydrocarbon chains with a carboxyl group at one end. They can be saturated or unsaturated based on the types of bonds between carbon atoms.
Identify the characteristics of saturated fatty acids: Saturated fatty acids have no double bonds between carbon atoms. This means all carbon-carbon bonds are single bonds, allowing the maximum number of hydrogen atoms to attach to the carbon chain.
Differentiate between saturated and unsaturated fatty acids: Unsaturated fatty acids contain one or more double bonds between carbon atoms, which reduces the number of hydrogen atoms attached to the carbon chain.
Consider the other options: Trans fats are a type of unsaturated fat with trans double bonds, and steroids are a different class of lipids with a structure based on four fused carbon rings, not fatty acids.
Conclude that the type of fatty acids containing only carbon-carbon single bonds are saturated fatty acids, as they are fully 'saturated' with hydrogen atoms.
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