Download Write out the steps of cellular respiration

Write out the steps of cellular respiration!!
Part One: What is the big picture? What is happening in this process?
Use these words: oxygen, energy, ATP, 36, carbon dioxide, glucose
The process of (aerobic) cellular respiration takes a molecule of glucose (from food) and
systematically releases that energy through three steps: glycolysis, Krebs, and the electron
transport chain. Aerobic celleular respiration requires oxygen and release carbon dioxide as a
waste product. The process generates 36 molecules of ATP per molecule of glucose.
Part Two: Describe what happens during glycolysis.
Use these words: cytoplasm, glucose, pyruvic acid/pyruvate, ATP, NADH, 2
Glycolysis is the first stage of cellular respiration, taking place in both aerobic and anaerobic
organisms. In the cytoplasm, glucose is broken down into 2 molecules of pyruvic acid (aka
pyruvate), releasing a net of 2 ATP molecules and 2 NADH molecules.
Part Three: Describe what happens during Krebs.
Use these words: mitochondria, pyruvic acid/pyruvate, (nameless) 4-C molecule, ATP, NADH,
FADH2, citric acid, carbon dioxide, acetyl coA, coenzyme A
Krebs is the second stage of cellular respiration; only aerobic organisms exposed to oxygen can
do this cycle. In the mitochondria, pyruvates arrive from glycolysis. One of the three carbons
is broken off and released as carbon dioxide. The remaining two carbon molecule (acetyl-CoA,
catalyzed by coenzyme A) joins with a 4-C molecule to produce citric acid. Citric acid is
systematically broken down to return to the 4-C reactant. Each change releases C (as CO2) and
electrons (picked up by energy carriers). The ATP is banked; NADH and FADH2 proceed to the
electron transport chain.
Part Four: Describe what happens during the electron transport chain.
Use these words: NADH, FADH2, hydrogen, ATP synthase, concentration gradient, chemiosmosis,
ATP
In the electron transport chain, high energy electron carriers (NADH and FADH2) arrive from
glycolysis and Krebs. They drop off their electrons, which move down the electron transport
chain embedded in the mitochondrial membrane. This pushes hydrogens across the membrane,
establishing a concentration gradient. As the H flow back out (through ATP synthase), they
engage in “chemiosmosis”, generating large amounts of ATP from ADP and P surrounding the
turbine (ATP synthase).
Part Five: Distinguish between aerobic and anaerobic respiration.
Use these words: oxygen-rich, oxygen-poor environment, bacteria
Aerobic respiration takes place in a oxygen-rich environment and generates large amounts of
ATP from glycolysis/Krebs/electron transport chain (up to 36 molecules of ATP per entering
molecule of glucose). Anaerobic respiration takes place in an oxygen-free environment, and only
glycolysis takes place. Many bacteria do this process, called alcoholic fermentation. Some
animals engage in lactic acid fermentation. Both types of fermentation result in only 2
molecules of ATP generated per entering molecule of glucose.