anabolism is the building up of molecules, releases H2O, endergonic; catabolism breaks down molecules, uses H2O(hydrolytic), exergonic
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10
How do photoheterotrophs produce energy
use light as an energy source and an organic compound for their carbon source and electron donor.
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15
Describe the mechanism of enzymatic action.
enzyme attracts substrates to its active site, catalyzes the chemical reaction by which products are formed, and then allows the products to dissociate
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15
List the factors that influence enzymatic activity.
temperature, pH, enzyme concentration, substrate concentration, and the presence of any inhibitors or activators.
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15
What is a ribozyme?
enzymatic RNA molecules that cut and splice RNA in eukaryotic cells.
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15
How are oxidative phosphorylation and photophosphorylation similar?
a membrane associated electron transport chain. creation of a proton gradient. harvesting energy of the proton gradient by making ATP with ATP synthase
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15
How do photoautotrophs produce energy
use light as energy source fixed carbon from CO2 via the Calvin-Benson cycleÂ
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15
Compare and contrast the light-dependent and light-independent reactions of photosynthesis.
light dependent-When H2O is oxidized-O2 produced, H2S is oxidized, S granules produced, ETC. Light-independent-CO2 is used to synthesized to make sugars
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15
What is the purpose of metabolic pathways?
chemical reactions in a cell that build and breakdown molecules for cellular processes;maintain cells energy balance
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15
What are the end-products of lipid and protein catabolism?
glycerol, fatty acid, acetyl coa, amino acids
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15
Identify the components of an enzyme.
enzymes consist of a protein portion called the apoenzyme, and a non-protein portion called a co factor.
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10
What are amphibolic pathways
Amphibolic pathway are metabloc pathways that function in BOTH catabolic and anabolic
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15
Distinguish competitive and noncompetitive inhibition.
competitive-binds to active site competing with substrate, reducing rate of rxn, non-Prevent substrate from bonding by changing the shape of all active sites