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Metabolism for cellular energy Chapter 9 Cellular Respiration

Metabolism for cellular energy Chapter 9 Cellular Respiration

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Metabolism for cellular energyChapter 9

Cellular Respiration

Chemical EnergyWhy do we eat? We need to __________

food so we can break it down into usable ________, like glucose.

The amount of energy we can get from food is ___________ by the amount of calories it _________.___________ = amount of energy needed

to raise the temperature of 1g of ______ by 1 degree Celsius.

You do not literally “burn” through the glucose in your food, your cells _________ release the energy it contains.

MitochondriaThe site of cellular respiration:

Organelle: AKA- ___________________ of the cell

Structure: made of ____ membranes (inner and outer)

Inner membrane contains a matrix surrounded by cristae

Respiration FormulaCellular Respiration means to _________

energy by breaking down ______ molecules in the presence of ________.

Formula:C6H12O6 + 6O2 = 6H2O + energy (heat and

_____)

Overview of cycleGlucose + oxygen ____________________ +

water + energyMitochondria perform respiration so we get

energy, we breathe _____ carbon dioxide and water.

Chemical PathwaysJust like photosynthesis, there are several

steps to respiration:1.) Glycolysis2.) Krebs Cycle (______________ cycle)3.) Electron Transport Chain (______)

GlycolysisOccurs in the __________ outside the

mitochondria.Glycolysis: the process of ___________ 1

molecule of glucose into 2 molecules of _________ acid (made of 3 carbon molecule)

2 pyruvic acids produced

Glycolysis is a ______ process, it can produce ____________ of ATP molecules in milliseconds!

This step of respiration does not require oxygen (__________)

Because glycolysis is so fast, the cell ______ up its available NAD+ quickly, and then ATP production will ______ unless more is made.

Krebs CycleThe pyruvic acid made during _____________

is used to make CO2, NADH, ATP, and FADH2 _________ the mitochondria

The NAD+ molecule ________/hold onto electrons as NADH until they are needed for other molecules.Just like the NADP+ used in photosynthesis

Krebs Cycle: AKA- Citric Acid CycleIn the mitochondria _______, the 3-carbon

pyruvic acid __________ molecules of CO2 and become Acetyl-CoA (citric acid)

Products made: NADH, FADH2, 2 ATP

Electron Transport ChainRemember the ETC in photosynthesis:The ETC uses the high-_______ electrons

from the Kreb’s Cycle to convert ____ to ATP.

High energy electrons come from NADH and FADH+

The ETC is in the cell ____________ for prokaryotes

FermentationWhen oxygen is ____ present, glycolysis is

followed by fermentation, an __________ process.Alcoholic Fermentation: done by _______ in bread.

Pyruvic acid + NADH = _______ alcohol + CO2 + NAD+Lactic Acid Fermentation: occurs when you’re

exercising ________ and cannot supply your muscles with enough oxygen.

Pyruvic acid + NADH = lactic acid + NAD+ Results in muscle __________

One man’s trash is another man’s treasure!The ____________ of

photosynthesis are the reactants of respiration.

The products of respiration are the _____________ of photosynthesis.

Net ResultsPhotosynthesis (chloroplast) = Glucose

total: 1 Like “____________” money into a bank

Respiration (mitochondria) = ATP total: 36 Like “_____________” money from a bank