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Bio 1201 Exam 2
Siebenaller, LSU
41
Biology
Undergraduate 1
03/08/2012

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Term
Energy sources for burst activity
Definition
Glucose & Glycogen
Term
Creatine Phosphate & Arginine Phosphate
Definition
the high-energy storage phosphagens in vertebrates and invertebrates
- recharge ADP back to ATP
Term
kinase
Definition
catalyzes the transfer of high energy phosphate to generate ATP
Term
Is glucose oxidized or reduced?
Definition
Oxidized
Term
coenzyme pool
Definition
purpose is to get NAD to NADH and to keep glycolysis going
Term
net production of glycolysis
Definition
2 ATP and 2 NADH
Term
Glycolysis
Definition
1 glucose -> 2 pyruvate, 2 ATP, 2 NADH
Term
net production of acetyl co-A formation
Definition
1 CO2 and 1 NADH
Term
net production of Krebs Cycle
Definition
2 CO2
1 ATP
3 NADH
1 FADH2
Term
net production of cellular respiration
Definition
3 CO2
1 ATP
4 NADH
1 FADH2
Term
what powers ATP synthesis?
Definition
the flow of hydrogen ions back across the inner mitochondrial membrane
Term
chemiosmosis
Definition
process that converts the chemical energy to a form used for ATP synthesis
Term
end products of fermentation
Definition
Ethanol & lactate
Term
Fermentation
Definition
- produces ATP when inadequate oxygen is available
- regenerates NAD from NADH for glycolysis to continue
- pyruvate is reduced
- NADH is oxidized
Term
Substrate Level phosphorylation
Definition
a direct transfer of the phosphate form organic substrate to ADP by an enzyme
Term
Oxidative Phosphorylation
Definition
ATP synthase, using the proton gradient from the electron transport chain to phosphorylate ADP
Term
ATP synthase
Definition
- produces ATP'
- found in the mitochondria
Term
metabolic efficiency
Definition
adaptation of diving mammals that allows them to glide and burn fats
Term
Calvin-Benson cycle (what is used & produced)
Definition
Used: ATP and NADPH
Produced: Sugars, amino acids, fatty acids
Term
light reactions (what is used/produced)
Definition
Used: water
Produced: O2
Term
photorespiration
Definition
- usually occurs on hot, dry, bright days, when the stomata close and the O2:CO2 ratio in the leaf increases, favoring the binding of O2 rather than CO2
- a metabolic pathway that consumes oxygen and ATP, releases CO2, and decreases photosynthetic output
Term
photosynthesis
Definition
uses light energy to produce organic molecules and oxygen
Term
reactants of photosynthesis
Definition
6 CO2 and 12 H2O
Term
3 phases of the Calvin-Benson cycle
Definition
Carbon fixation
Reduction
Regeneration of CO2 acceptor
Term
Cellular respiration
Definition
requires organic molecules and oxygen to produce CO2 and H2O that is used in photosyntehsis
Term
Marine bony fish are ______ in seawater
Definition
Hypotonic
Term
Sharks & rays are ______ in seawater
Definition
Isotonic
Term
Invertebrates are ________ in seawater
Definition
Isotonic
Term
Hypertonic
Definition
high water potential, fewer solutes. Shrivel
Term
Hypotonic
Definition
low water potential and more solutes; Lyse
Term
aquaporins
Definition
channel proteins that facilitate water diffusion through the membrane
Term
Circe effect
Definition
- positively-charged arginine side-chain (R-group) lures the negatively-charged metabolite into the active site
- the substrate is turned into a product in the active site
Term
enzyme homologs
Definition
comparable enzymes from different organisms
Term
Coenzymes
Definition
NAD, NADH, NADP, NADPH, FAD, FADH2
Term
coenzymes used in photosynthesis
Definition
NADP, NADPH
Term
reducing power
Definition
A transfer of electrons and hydrogen with the help of a carrier molecule
Term
competitive inhibition
Definition
involves the substrate and inhibitor competing to bind to the active site
Term
noncompetitive inhibition
Definition
involves the inhibitor binding at site away from the substrate binding site
Term
first law of thermodynamics
Definition
within any closed system, the total amount of energy remains constant
Term
second law of thermodynamics
Definition
all spontaneous processes result in an increase in randomness and disorder in the universe, and a loss of localized concentration of energy
Term
formula for energy change
Definition
DeltaG = DeltaH - T(DeltaS)
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