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Cellular Respiration Part 1
This deck covers the fundamental concepts of cellular respiration, including its stages, processes, and the relationship between photosynthesis and cellular respiration.
cellular respiration
the process in which cells make ATP by breaking down organic compounds
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Key Terms
Term
Definition
cellular respiration
the process in which cells make ATP by breaking down organic compounds
photosynthesis
the process in which autotrophs convert light energy into chemical energy
which types of organisms undergo cellular respiration
both autotrophs and heterotrophs
what happens when organic compounds are broken down into simpler compounds
energy is released
what is the energy released by the organic compound mostly used to do
produce ATP
the products of cellular respiration (3)
CO2, water, and ATP
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| Term | Definition |
|---|---|
cellular respiration | the process in which cells make ATP by breaking down organic compounds |
photosynthesis | the process in which autotrophs convert light energy into chemical energy |
which types of organisms undergo cellular respiration | both autotrophs and heterotrophs |
what happens when organic compounds are broken down into simpler compounds | energy is released |
what is the energy released by the organic compound mostly used to do | produce ATP |
the products of cellular respiration (3) | CO2, water, and ATP |
two stages of cellular respiration | glycolysis and aerobic respiration |
glycolysis | a 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 other | the products of photosynthesis are the reactants of cellular respiration, and the reactants of photosynthesis are the products of cellular respiration |
anaerobic | does not require the presence of oxygen |
aerobic respiration | pyruvic acid is broken down and NADH is used to make lots of ATP |
what pyruvic acid undergoes with no oxygen present | fermentation |
fermentation | the breakdown of pyruvic acid by enzymes, bacteria, yeasts, or mold in the absence of oxygen |
type of reaction in cellular respiration | redox |
redox reaction | one reactant loses electrons and another gains electrons |
cellular respiration equation | C6H12O6+6O2---> 6CO2+6H2O+ATP |
where the reactions of glycolysis take place | cytosol |
step one glycolysis | two phosphate groups are attached to one molecule of glucose, ATP converted to ADP |
step two glycolysis | 6-carbon molecule split into two 3-carbon molecules of G3P |
step three glycolysis | G3P molecules lose electrons and receive another phosphate group, two molecules of NAD+ converted into NADH |
step four glycolysis | all 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 glycolysis | 2 ATP |
total ATP produced in glycolysis | 4 ATP |
how many NADH molecules produced in glycolysis | 2 NADH |
how NAD+ becomes NADH | electrons released through glycolysis attach to NAD+ |
where pyruvic acid goes if there's no oxygen | fermentation |
what fermentation regenerates | NAD+ |
what fermentation does not produce | ATP |
how various fermentation pathways differ (2) | enzymes and products |
the two common fermentation pathways products | lactic acid and ethyl alcohol |