metabolism for cellular energy chapter 9 cellular respiration
TRANSCRIPT
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.