Cellular Respiration Flashcards
Aerobic (needs oxygen
Glucose+oxygen-2atp carbon dioxide + water +38 atp
C7H12O6 6O2 6CO2 6H2O
*occurs in cytoplasm (glycolysis) and mitochondria (Krebs cycle and electron transplant chain)
Anaerobic (without oxygen)
Glucose acid +CO2 + 4ATP
2ATP
C6H12O6
Lactic acid in muscles (feel the burn)
Ethanol (alcohol) by yeast
- occurs in cytoplasm
- Only option for prokaryotes because they do not have mitochondria
What are the products of glycolysis
ATP, NADH, and pryuvated
How many carbons are in one molecule of pyruvate
3
Why do living organisms need oxygen
Oxygen as needed because it is the electron except or of the electron transport chain in the cellular respiration process which produces atp
Name three major processes in the order of occurrence in cellular respiration
Glycolysis, TCA cycle, electron transport chain
Step 1: glycolysis
*happens in cytoplasm
*does not require oxygen
Begins when glucose enters the cell
Enters through diffusion or endocytosis
Gets broken down into 2 pyruvic acids (3 carbon molecules)
The energy needed to break glucose comes from two ATP molecules
You need to spend it to make it. 12ETP and spent a break glucose, the energy released from the bone breaking is then used to create 4 ATP
The high energy electrons from this reaction are carried by NADH+
The high energy electrons from this reaction are carried by NADH+
(NAD becomes NADH+ as it carries electrons)
The electron carriers, NADH+ goes to the mitochondria out where it will be used in later step
Step 2: Krebs cycle
- happens in the matrix of the mitochondria (most central part)
- requires oxygen
Pyruvic acid dissolves into carbon dioxide and acetyl CoA (a two carbon sugar)
Acetyl CoA (two carbon sugar) is joined to a four carbon sugar (oxaloacetate)
After the acetyl CoA Joins the four carbon acceptor ( oxaloacetate)compound it forms to a six carbon compound(citrate)
Citrate (a six carbon molecule) then has been stripped from until it is recycled into the oxaloacetate molecule from a previous step
The energy released from stripping off the carbon is used to form ATP
ADP becomes ATP
The Krebs cycle turns twice during one cycle of respiration. As it turns, NAD becomes an a DH
FAD becomes FADH2
Step 3: electron transport chain
- happens in the inner membrane of the mitochondria
NADH+ and FADH2 are reduced and release their H+ ions
As they are reduce they released a high energy electrons they have been carrying
H+ ions are pushed into the inner membrane creating a high concentration
These electrons balance between the proteins in the inner membrane like hot potatoes
H+ ions diffuse from high to low concentration by diffusing through ATP synthase
(The membrane is not permeable to Iona so this is the only place Ions can escape)
As the H+ ions diffuse through ATP synthase it spins
As ATP synthase spends it turns ADP into ATP
ATP Synthese creates ATP
Oxygen diffuses into the cell and into the mitochondria
Elections are pulled to O2 and join it to H+ ions
Water is formed
Reactants
Glucose and oxygen
Products
ATP carbon dioxide and water
