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CHEM 2120 LEC
MOCK QUIZ
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Cards (74)
What is the building block of lipids?
Fatty acids
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Which of the following is NOT a function of lipids?
Enzyme
catalysts
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Which lipid type is the main component of cell membranes?
Phospholipids
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Which of the following is a lipid with four interconnected carbon rings?
Steroid
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What is the basic unit of triglycerides?
Glycerol
+ 3
fatty acids
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A fatty acid with one double bond is classified as?
Monounsaturated
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Plant oils at room temperature are usually?
Unsaturated
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Which fatty acid is an omega-3?
Linolenic acid
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Which bond connects fatty acids to glycerol?
Ester
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What is the hydrophobic part of a phospholipid?
Fatty acid tail
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Which is NOT a lipid?
Cellulose
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The amphipathic nature of phospholipids means?
They have
hydrophobic
and
hydrophilic
regions
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Which of the following increases membrane fluidity?
Unsaturated fats
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Lipids yield how many kcal/g upon oxidation?
9 kcal/g
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The backbone of a phospholipid is usually?
Glycerol
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Waxes are made of?
Long-chain alcohols
+
fatty acids
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Which lipid serves as a precursor for vitamin D?
Cholesterol
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Which of these fatty acids is essential?
Linoleic acid
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Which type of fatty acid lowers melting point most?
Cis-unsaturated
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A lipid storing the most energy is?
Triacylglycerol
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Glycolipids are lipids containing?
Sugars
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Which is a sphingolipid?
Cerebroside
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Omega-3 and omega-6 fatty acids are named based on?
Methyl
end
double bond
position
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Lipids are hydrophobic mainly because they consist of?
Carbon
and
hydrogen
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What is the building block of proteins?
Amino acids
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At physiological pH, amino acids exist as?
Zwitterions
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Which amino acid is an imino acid?
Proline
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Essential amino acids are?
Not
synthesized
by the body
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Which group defines amino acid polarity?
Side chain (R group)
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Which amino acid contains a sulfur group?
Cysteine
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Which amino acid can form disulfide bonds?
Cysteine
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Which is NOT a polar amino acid?
Valine
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Which amino acid is aromatic?
Phenylalanine
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Which amino acid is the simplest?
Glycine
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Which amino acid is semi-essential?
Arginine
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Which amino acid has an indole ring?
Tryptophan
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Which amino acid acts as a neurotransmitter precursor?
Tyrosine
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Histamine is derived from?
Histidine
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Which amino acid is used in urea cycle intermediates?
Ornithine
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The average molecular weight of an amino acid is?
113
Da
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