Ch 8 exam 3 Flashcards
(30 cards)
What types of organisms perform cellular respiration?
Plants, animals, fungi, protists, and even many bacteria
What is the summary cellular respiration reaction?
C6H12O6 + 6O2 ——> 6CO2 + 6H2O +ATP
a biochemical process of breaking down food, usually glucose, into simpler substances. The energy released in this process is tapped by the cell to drive various energy-requiring processes.
Why is cellular respiration exergonic?
They release free energy that can
be captured by the cell.
What is the ATP yield for each glucose molecule that passes through cellular respiration?
38 ATP
What organelle is associated with cellular respiration?
mitochondria
What are the four phases of cellular respiration (in order)?
- Glycolysis
- Formation of Acetyl COA
- Kreb’s Cycle
- Electron Transport Chain
Where does glycolysis occur?
the cytoplasm
What does anaerobic mean?
does not use oxygen
In glycolysis, the glucose (6C) molecule is broken into what 3C molecules?
pyruvate
What is the ATP yield for glycolysis?
2
What carrier is produced by glycolysis?
NADH
What is another name for anaerobic respiration?
fermentation
Where does fermentation occur?
they cytoplasm
Does fermentation require oxygen?
no
What is produced by alcoholic fermentation?
ethyl alcohol
What are the two types of fermentation?
lactate and alcohol
What types of organisms use lactate fermentation?
fungi and bacteria and animals
What types of organisms use alcoholic fermentation?
Yeast (eukaryotic, unicellular fungi)
What is the ATP yield of fermentation?
2
What is the total ATP yield of aerobic respiration?
36 to 38 ATPs per molecule of glucose
What is another name for the Krebs cycle?
The citric acid cycle
What are the three steps in aerobic respiration?
glycolysis, the Krebs cycle, and the electron transport chain
Where does the Krebs cycle occur?
across the inner membrane of the mitochondria
What is the ATP yield of the Krebs cycle?
2
