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HN2 test 3
Terms in this set (43)
the component of either dietary or storage fat that can be converted into glucose is
the carbon skeleton left after the deamination of an amino acid is a
carbon-carbon double bonds in the cis form result in what?
result in a kinking of the fatty acid into a u shape
which of the following is NOT an example of a protein found in the human body
if the omega-end numbering is used, the numbering will begin at what end?
cholesterol is NOT precursor for what?
the tertiary structure of protein allows it to assume a unique shape that is ______ which contributes to its overall ______
globular or fibrous; solubility
amino acids are absorbed by _____ in enterocytes
what is a truth of eicosanoids
ALL (they include prostaglandins, thromboxanes, and leukotrienes, some are known to be antagonistic towards eachother, they act like homrones, and may be altered by fatty acids)
what is a truth of phospholipids
ALL (primary fxn is structural, they always contain 2 fatty acids, they are more polar than triglycerides)
what is the name of the key enzyme that begins the process of protein hydrolysis?
the fatty acid synthase system is involved in creating
palmitate from acetyl AcoA
beta-oxidation in the mitochondria produces
the lipoprotein responsible for transport
when the diet is lacking in the amino acids alanine and glycine
the body will synthesize them
what does the term, limiting amino acid mean?
one of the essential amino acids is insufficient to support growth
which AA is NOT classified as a branched-chain amino acid?
an example of an omega 6 fatty acid is:
which of these are not found in micelles
apo protein b100
What primary tissue forms urea from ammonia
what primary tissue does gluconeogenesis
what primary tissue uses glutamine as a primary energy substrate during fasting
what primary tissue does ketogenesis
what primary tissue does lipogenesis
what amino acid does production of urea and ornithine
what amino acid is a major fuel of enterocytes
what amino acid is exclusively ketogenic
what amino acid is a precursor of neurotransmitter, GABA
a key enzyme in the digestion of fats is
lipoprotein lipase, colipase, pancreatic lipase
T/F: only about 20 AA are actually coded by our DNA
T/F: the body can synthesize BCAA
T/F: malonyl coA inhibites carnitine palmitoyl transferase II (CPTII) which is located on the inner mitochondria membrane
T/F: free amino acids are absorbed from the gut in a concentration-dependent manner
T/F: secretin, CCK, and GIP are all considered "enerogastrones" that are secreted by the gut mucosa in the presence of dietary lipid
T/F: APO C is expressed on lipid carrier proteins and interacts with LPL thus facilitating lipid entry into cells
T/F: APO E stimulates uptake of LDL
T/F: PPARs are transcription factors associated lipid metabolism . Of the three forms, the gamma form is that which is the target of the TZD drug class.
what is the rate limiting enzyme in cholesterol synthesis rom acetyl coA?
HMG coA reductase
this enzyme is allosterically inhibited by
production of cholesterol
As a part of the digestion and absorption process of lipids, _____ form in the lumen of the gut with the help of bile salts.
Once absorbed in to the SI, fatty acids, glycerol and monolglycerols then enter the ____ where they get packaged into ____ which then enter circulation via the lymphatic system.
ER and chylomicrons
AMPK regulates metabolism by serving as a major fuel sensor in cells. It is activated by the __ : __ ratio. When AMPK is active, lipid synthesis is ____.
ATP : AMP ratio and inhibited
In this transamination reaction pyruvate goes to _____ and what goes to alpha keto glutarate.
alanine and glutamate
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