STEM 5 - SH 204
CELLULAR
RESPIRATION AND
THE ROLE OF
MITOCHONDRION
PRE-SERVICE TEACHER MITCH
Learning Objective:
At the end of this lesson, the student
must be able to:
Describe cellular respiration
and the role of the mitochondria
in cellular respiration.
Distinguish the processes of
cellular respiration.
Determine the reactants and
products of cellular respiration.
What is
Cellular
Respiration?
Questions
WHAT IS THE
DIFFERENCE
BETWEEN
MITOCHONDRIA
AND
MITOCHONDRION
?
My Book
Review
WHAT I LEARNED AND WANT TO SHARE
CELLULAR RESPIRATION
primarily responsible for the production of
biological energy. Both eukaryotic and
prokaryotic cells require cellular respiration
because this biological energy is used to
power various metabolic processes such as
biosynthesis, motility, and molecule transport
across membranes.
It is the process by which organisms
mix oxygen with food molecules,
transferring the chemical energy in
these molecules to life-sustaining
processes while discarding carbon
dioxide and water as waste products.
AEROBIC RESPIRATION
Aerobic respiration is the
conversion of nutrients to carbon
dioxide, water, and energy via an
electron transport system in
which molecular oxygen serves as
the final electron acceptor. To
obtain energy from glucose, most
eukaryotes and prokaryotes use
aerobic respiration. Glycolysis,
the citric acid cycle, and the
electron transport chain are the
three primary phases of aerobic
respiration.t
ANAEROBIC RESPIRATION
Anaerobic respiration is a type of
respiration that allows cells to break down
sugars for energy production without the
use of oxygen. This is in contrast to
aerobic respiration, which is a highly
efficient energy-producing process that
relies on oxygen. Alcohol fermentation,
lactic acid fermentation, and organic
matter breakdown are all examples of
anaerobic respiration. Glucose + enzymes
= carbon dioxide + ethanol / lactic acid is
the equation. It produces less energy than
aerobic respiration, but it gets the job
done.
M
i
t
o
c
h
o
n
d
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o
n
MITOCHONDRION
PARTS
OUTER MEMBRANE
INTERMEMBRANE SPACE
INNER MEMBRANE
CRISTAE
MATRIX
DNA
RIBOSOMES
FUNCTION
Role of the Mitochondrion
An intermembrane space exists between the
cell's outer and inner membranes. The
protons that are pushed out of the matrix
are stored in the intermembrane gap. ATP
production and the Krebs cycle take place in
the mitochondrial matrix. The proteins
involved in the electron transport chain, as
well as the ATP synthase, are found in the
mitochondria's inner membrane. Cristae, on
the other hand, are inner membrane folds
that boost ATP production surface area.
REACTANT
The Reactant
and Product
of Cellular
Respiration
Glucose and oxygen
molecules
PRODUCT
water, carbon dioxide,
and ATP molecules
FORMULA OF CELLULAR RESPIRATION
glucose (C6H12O6) is oxidized forming
carbondioxide while oxygen (O2) is
reduced forming water (H2O).
KEY POINTS
Cellular respiration
Aerobic respiration
Anaerobic respiration
Glycolysis, Krebs cycle, electron transport chain, and
chemiosmosis
Krebs cycle and electron transport chain
Glucose and Oxygen
Carbon Dioxide and Water
Mitochondria
outer membrane
inner membrane and cristae
intermembrane space
matrix
Thank you!
DO YOU HAVE ANY QUESTIONS FOR ME?