Download Enzymes

Molecule
Composition
Function
1
amino acids
reaction
catalyst
2
fatty acids
membrane
component
3
monosaccharides
energy
source
4
nucleotides
genetic
information
Set up the next page in your journal…
 Page:
12
 Date: 9-13-16
 Title: Enzymes
 Essential Question: How do I describe
the role of enzymes?
 Yes,
Cornell notes!

proteins that regulate cell processes
◦ help maintain homeostasis
◦ work best in specific conditions
(temperature, pH, etc.)

biological catalysts
◦ catalyst: a substance that speeds up a
chemical reaction
 BIOLOGICAL catalysts are found in living things
◦ REDUCE the activation energy needed to start
a reaction
 activation energy: how much energy it takes to
start a reaction

very specific
◦ perform specialized jobs
◦ have particular shapes that only fit with particular
substrates (like a lock and key)
 substrate: a chemical that binds with an enzyme
and changes in some way

named for their job
◦ names end in –ase
 lactase (breaks down lactose)
 protease (breaks down protein)

Unchanged by the reaction, reused
Draw and label, but it doesn’t have to be perfect
(reactants)
Create an analogy for an enzyme & substrate on the piece of
computer paper. Here’s my example.
An enzyme is like a key
because it only opens a
specific lock and you can
use the key over and
over again. A substrate
is like a lock because it
changes forms (reactant
Substrate
and product). When the
key is in the lock, then
you have an enzymeEnzyme
substrate complex.

 Explain
why the jolly rancher in
your mouth dissolved, but the jolly
rancher in the water did not.