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Biology Chapter 3: Cellular Metabolism
mcat biology
60
Biology
Undergraduate 4
06/30/2009

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Term
anabolic
Definition
require energy
Term
catabolic
Definition
release energy
Term
photosynthesis is a ____ process
Definition
anabolic
Term
autotrophs
Definition
anabolic because need energy to make food
Term
heterotrophs
Definition
catabolic because break down nutrients
Term
4 energy carriers used in metabolism:
Definition
ATP---NAD+---NADP+---FAD
Term
ATP is composed of:
Definition
1. adenine (nitrogenous base)
2. ribose (sugar)
3. 3 weak phosphate groups
Term
energy of atp is stored in
Definition
covalent bonds attaching phosphate groups (high energy bonds)
Term
__ kcal of energy per mole of atp
Definition
7
Term
inorganic phosphate
Definition
Pi endproduct of atp-adp
Term
ATP to AMP releases this
Definition
pyrophosphate PPi
Term
NAD+ NADP+ and FAD store energy in the form of
Definition
high potential electrons
Term
NAD+ NADP+ and FAD are ___ during catabolic processes
Definition
reduced
Term
NAD+ NADP+ and FAD other forms are _____ during anabolic processes
Definition
oxidized
Term
NAD+ NADP+ and FAD's reduced forms
Definition
NADH NADPH FADH2
Term
NAD+ is reduced to
Definition
NADH
Term
FADH2 is oxidized to
Definition
FAD
Term
glucose catabolism occurs in two stages:
Definition
1. glycolysis 2. cellular respiration
Term
after glycolysis we have ____ ATP and ___ ____
Definition
2; 2NADH
Term
substrate level phosphorylation
Definition
results in the formation of ATP by direct transfer of a phosphate group to ADP WITHOUT participate of an intermediate molecule
Term
pyruvate is reduced during the process of fermentation in ___ conditions
Definition
anaerobic
Term
pyruvate is further oxidized during cell respiration in the mitochondria in ___ conditions
Definition
aerobic
Term
fermentation:
Definition
reduces pyruvate into ethanol or lactic acid
Term
fermentation produces ___ ATP per glucose molecule
Definition
2
Term
alcohol fermentation occurs in
Definition
yeast and some bacteria
Term
lactic acid fermentation occurs in
Definition
certain fungi and bacteria, human muscle cells
Term
most efficient catabolic pathway to get energy stored in glucose
Definition
cellular respiration
Term
3 stages of cellular respiration:
Definition
1. pyruvate decarboxylation 2. citric acid cycle 3. electron transport chain
Term
pyruvate decarboxylation occurs in the
Definition
mitochondrial matrix
Term
pyruvate decarboxylation produces _____
Definition
2 NADH
Term
citric acid cycle occurs in
Definition
the matrix of the mitochondria
Term
another name for the citric acid cycle
Definition
krebs cycle
Term
the citric acid cycle is linked to glycolysis by
Definition
pyruvate
Term
oxidative phosphorylation occurs in
Definition
the citric acid cycle
Term
citric acid cycle produces
Definition
6 NADH, 2 FADH2, and 2 ATP
Term
the single greatest direct source of ATP
Definition
electron transport chain
Term
electron transport chain occurs in the
Definition
inner mitochondrial membrane
Term
__ is the final electron acceptor
Definition
oxygen
Term
NADH gives how many ATP?
Definition
3 (except for NADH from cytoplasm gives only 2)
Term
FADH2 gives how many ATP?
Definition
2
Term
coupling of the oxidation of NADH with the phosphorylation of ADP is called
Definition
oxidative phosphorylation
Term
glycolysis occurs in the
Definition
cytoplasm
Term
fermentation occurs in the
Definition
cytoplasm
Term
pyruvate transforms into ___ during pyruvate decarboxylation
Definition
acetyl CoA
Term
in an anaerboic environments eukaryotic cells can generate only __ net ATP
Definition
2
Term
in aerobic environments eukaryotic cells can generate __ net ATP
Definition
36!
Term
glycolysis gives you ___ net ATP
Definition
6
Term
pyruvate decarboxylation gives you __ net ATP
Definition
6
Term
citric acid cycle gives you __ net ATP
Definition
24
Term
disaccharides are hydrolyzed into
Definition
monosaccharides
Term
order body uses food:
Definition
glucose, other carbs, fats, proteins
Term
fat is stored in ___ ___ in the form of ______
Definition
adipose tissue; triglyceride
Term
___ is hte storage polymer of glucose
Definition
glycogen
Term
substrate level phosphorylation gives ___ ATP per one glucose
Definition
4
Term
metabolic end product of anaerobic metabolism
Definition
lactic acid
Term
fatty acids are broken down and used during
Definition
aerobic respiration
Term
fermentation begins with glycolysis and ends with the conversion of pyruvate to ___ or ___
Definition
lactic acid, ethanol
Term
inorganic phosphate
Definition
limits the rate of oxidative phosphorylation
Term
PGAL
Definition
prime end product of photosynethesis--used as food or stored as insoluble poly sacc such as starch
Term
lipid derivatives:
Definition
steroids, waxes, carotenoids
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