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Lehninger Chapter 21 - Lipid Synthesis - Intro
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Beta-oxidation takes place in the
 
mitochondrial matrix
 
cytoplasm
 
Golgi body
 
cell membrane
The function of fatty acyl CoA is to
 
activate a fatty acid for metabolism
 
produce a 2-carbon segment for metabolism.
 
isomerize cis fatty acids.
 
produce a lipoprotein.
The 2-carbon segments removed from a fatty acid during metabolism are used to form
 
acetyl CoA
 
pyruvate
 
CoA
 
glucose
Red blood cells do not metabolize fatty acids because they have
 
no mitochondria
 
no nucleus
 
a cell membrane
 
no DNA
The heart muscle's primary source of fuel is
 
fatty acids
 
glucose
 
amino acids
 
glycogen
The source of energy for red blood cells is
 
glucose
 
amino acids
 
glycerol
 
fatty acids
Fatty acids are not a source of energy for the brain because
 
they cannot diffuse across the blood-brain barrier
 
the citric acid cycle does not operate in the brain.
 
chylomicrons are too large for absorption by brain cells
 
there is no lipase in the brain.
A chylomicron is a
 
transport lipoprotein.
 
lipase
 
digestive enzyme
 
storage protein
The small droplets of fat that are the first step in the digestion of dietary fats are called
 
micelles
 
emulsions
 
high-density lipoproteins
 
low-density lipoproteins.
Most of the energy stored in the human body is in the form of
 
triacylglycerols
 
the amino acid pool
 
muscle tissue
 
glycogen
During complete oxidation of the fatty acid CH3(CH2)18COOH, __________ molecules of acetyl CoA are produced, and the fatty acid goes through the β-oxidation cycle __________ times.
 
ten; nine
 
ten, ten
 
nine;nine
 
nine;eight
The series of reactions that produces energy by hydrolyzing fats to units of acetyl CoA is called
 
β oxidation.
 
transamination
 
hydration
 
β reduction
The coenzyme(s) used in fatty acid synthesis is (are) __________.
 
NADPH
 
NADH
 
FADH2
 
FADH2 and NADH
In the activation of a fatty acid, energy from the hydrolysis of ATP is used to
 
join the fatty acid to CoA
 
form a double bond in an oxidation reaction.
 
add a molecule of water across a double bond to give a hydro
 
oxidize the hydroxyl group on the β carbon.
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