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Biochem 4: Metaboism
1. Bellringer
Describe how acids affect proteins in the body.
What do you think people mean when they say
someone has a fast metabolism?
2. Agenda
Collect Homework
Guided Notes: pH and Protein
NOTES: Metabolism
Anabolic vs Catabolic reactions
Photosynthesis
Cellular Respiration
Fermentation
3. Metabolism
The word metabolism refers to all of the chemical
reactions that take place within living things
There are 2 types of metabolic reaction
1) Anabolic Reactions
Building large molecules from small ones
Anabolic reactions require energy
2) Catabolic Reactions
Tearing apart large molecule into small ones
Catabolic reactions release energy
6. Photosynthesis
Photosynthesis is a chemical reaction in which
plants combine water and carbon dioxide gas to
create glucose (sugar).
Oxygen gas is given off as a waste product.
7.
8. Photosynthesis is Anabolic
Photosynthesis is considered an anabolic
process for 2 reasons
It combines small molecules to make large.
Making a single molecule of glucose requires
6 waters and 6 carbon dioxides.
It requires energy. Photosynthesis is only
possible when the plant absorbs energy from
the sun.
9.
10. Catabolic Reactions
In order to use the energy stored in glucose, the
molecule must be broken apart.
There are 2 types of catabolic reactions
Respiration: Aerobic (requires oxygen)
Fermentation: Anaerobic (Doesn’t require oxygen)
11. Cellular Respiration
Cellular Respiration uses oxygen to break
down food. When glucose is broken down it
releases energy.
Water and Carbon Dioxide are created as
waste.
14. Fermentation
Fermentation is a way to break down glucose
without using oxygen, but produces less
energy
Fermentation is done by many bacteria, and by
animals when they are “short of breath”.
2 types of fermentation
Alcohol: Done by fungi and bacteria
Lactic Acid: Done by bacteria and animals
15. Alcohol Fermentation
Alcohol fermentation
produces 2 waste products
Carbon Dioxide Gas
Alcohol
Beer is created by allowing
yeast to digest barley grain.
In fact, all alcoholic
beverages are created by the
digestive process of
microscopic organisms
16. Lactic Acid Fermentation
Lactic Acid fermentation is
used in the production of
dairy items like cheese and
yogurt.
Humans also produce lactic
acid in their muscles during
intense exercise. The
buildup of this acid explains
why your muscles burn after
working out.