cellular respiration quizlet

cellular respiration quizlet


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Asked by 2 years ago
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cellular respirationthe process in which cells make ATP by breaking down organic compounds
photosynthesisthe process in which autotrophs convert light energy into chemical energy
which types of organisms undergo cellular respirationboth autotrophs and heterotrophs
what happens when organic compounds are broken down into simpler compoundsenergy is released
what is the energy released by the organic compound mostly used to doproduce ATP
the products of cellular respiration (3)CO2, water, and ATP
two stages of cellular respirationglycolysis and aerobic respiration
glycolysisa biochemical pathway in which one six-carbon molecule of glucose is oxidized to produce two three-carbon molecules of pyruvic acid
how photosynthesis and cellular respiration depend on each otherthe products of photosynthesis are the reactants of cellular respiration, and the reactants of photosynthesis are the products of cellular respiration
anaerobicdoes not require the presence of oxygen
aerobic respirationpyruvic acid is broken down and NADH is used to make lots of ATP
what pyruvic acid undergoes with no oxygen presentfermentation
fermentationthe breakdown of pyruvic acid by enzymes, bacteria, yeasts, or mold in the absence of oxygen
type of reaction in cellular respirationredox
redox reactionone reactant loses electrons and another gains electrons
cellular respiration equationC6H12O6+6O2---> 6CO2+6H2O+ATP
where the reactions of glycolysis take placecytosol
step one glycolysistwo phosphate groups are attached to one molecule of glucose, ATP converted to ADP
step two glycolysis6-carbon molecule split into two 3-carbon molecules of G3P
step three glycolysisG3P molecules lose electrons and receive another phosphate group, two molecules of NAD+ converted into NADH
step four glycolysisall phosphate groups are removed from the molecule to make two molecules of pyruvic acid, the four released phosphates convert four ADP to four ATP
net yield of ATP in glycolysis2 ATP
total ATP produced in glycolysis4 ATP
how many NADH molecules produced in glycolysis2 NADH
how NAD+ becomes NADHelectrons released through glycolysis attach to NAD+
where pyruvic acid goes if there's no oxygenfermentation
what fermentation regeneratesNAD+
what fermentation does not produceATP
how various fermentation pathways differ (2)enzymes and products
the two common fermentation pathways productslactic acid and ethyl alcohol
lactic acid fermentationpyruvic acid is converted into lactic acid
what is used to make lactic acidone hydrogen atom from NADH and one free hydrogen proton
what happens to NADH in lactic acid fermentationit is oxidized and converted to NAD+
type of reaction that occurs in muscles during strenuous exerciselactic acid fermentation
organ where lactic acid is converted back into pyruvic acidliver
the liverwhere lactic acid is converted back into pyruvic acid
how many carbons in lactic acid3
alcoholic fermentationpyruvic acid is converted into ethyl alcohol
organisms that use alcoholic fermentationplant cells and unicellular organisms
process of alcoholic fermentation (2 steps)CO2 is removed from pyruvic acid, two hydrogen atoms added
what is regenerated in alcoholic fermentationNAD+
one kilocalorie=? calories1000
efficiency of glycolysis=energy required to make ATP/energy released by oxidation of glucose
where pyruvic acid goes when oxygen is availableaerobic respiration
aerobic respiration produces ?x as much ATP as glycolysis20
two stages of aerobic respirationthe Krebs cycle and the electron transport chain
chemiosmosisprocess by which ATP is made using the energy released as protons move across a memrbrane
as glucose is oxidized NAD+ is...converted into NADH
the Krebs cycle, functionbreaks down acetyl CoA
where the Krebs cycle takes place (eukaryotes)the mitochondria
where the Krebs cycle takes place (prokaryotic)the cytosol
mitochondrial matrixthe space inside the inner and outer membranes of a mitochondrion
what the mitochondrial matrix containsenzymes to catalyze the reactions of the Krebs cycle
in the mitochondrial matrix, pyruvic acid reacts with ? to form ?, and releases a ?CoA, acetyl CoA, CO2 molecule
products of the Krebs cycle (3)CO2, hydrogen atoms, and ATP
final electron acceptor of ETCoxygen
efficiency of cellular respiration=energy required to make ATP/energy released by oxidation of glucose
cellular respiration
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Asked: 2 years ago

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