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Cellular Respiration Slides

Cellular respiration is a series of reactions that breaks down glucose and other molecules from food to release energy, occurring in the cells of organisms. Aerobic respiration requires oxygen to release a large amount of energy from glucose stored as ATP, while anaerobic respiration occurs without oxygen and releases less energy.

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330 views7 pages

Cellular Respiration Slides

Cellular respiration is a series of reactions that breaks down glucose and other molecules from food to release energy, occurring in the cells of organisms. Aerobic respiration requires oxygen to release a large amount of energy from glucose stored as ATP, while anaerobic respiration occurs without oxygen and releases less energy.

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Cellular Respiration

● Glucose and other molecules from food are


broken down to release energy in a complex
series of chemical reactions that together are
called cellular respiration.

● Cellular respiration is a set of metabolic


reactions and processes that take place in the
cells of organisms to convert biochemical energy
from nutrients into ATP, and then release waste
products.
Aerobic Respiration
● Aerobic respiration requires oxygen.
● This is the reason why we breathe oxygen in
from the air.
● This type of respiration releases a large amount
of energy from glucose that can be stored as
ATP.
● Aerobic respiration happens all the time in
animals and plants, where most of the reactions
occur in the mitochondria.
Aerobic Respiration Equation:
Reactants Products

C6H12O6+ 6 O2 → 6 CO2 + 6 H2O + (approximately) 38 ATP

(Sugar + Oxygen → Carbon Dioxide + Water + ATP)


Anaerobic Respiration
● Anaerobic respiration occurs in the absence of oxygen.
● It releases a much smaller amount of energy than aerobic
respiration.
● Anaerobic respiration does not release enough energy to
power human cells for long – think about how long a
person can live if they are not able to breathe.
● Anaerobic respiration occurs in muscle cells during hard
exercise (after the oxygen has been used up). It also
occurs in yeast when brewing beer. Many prokaryotes
perform anaerobic respiration

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