Transcript b0080 Energy - mrmartinosbiology

Warm Up
List as many biological processes as you can
that involve chemistry.
Chapter 2: Chemistry of Life
Section 2
Energy
Pgs 35-36
I. Energy and Matter
i. Energy: the ability to do work
I. Energy and Matter

There are different forms of energy

Remember, energy can be
converted into different forms
I. Energy and Matter
ii. States of Matter
1.
Solid
A) Particles closely linked in place
B) Has a fixed volume and shape
2.
Liquid
A) Particles move more freely over one another
a)
Still attracted enough to each other to stay together
B) Has fixed volume but not a fixed shape
3.
Gas
A) Particles move most rapidly
a)
Have little to no attraction for each other
B) Has no fixed volume or shape
I. Energy and Matter
II. Energy and Chemical Reactions
i. Chemical reaction: process which one or
more substances change to produce one or
more different substances
1. The atoms of the substances rearrange to
form something different
II. Energy and Chemical Reactions
a) Lets work with iron (Fe)
iron + oxygen
Substances on the left
hand side of the arrow
are the reactants
iron oxide
Substances on the right
hand side of the arrow
are the products
II. Energy and Chemical Reactions
II. Energy and Chemical Reactions
2. Reversible Reactions
carbon
dioxide
water
carbonic
acid
II. Energy and Chemical Reactions
3. Activation energy: the amount of energy
needed to start a reaction
a)
Often reactions do not happen
spontaneously, they need energy first added
to the system
II. Energy and Chemical Reactions
II. Energy and Chemical Reactions
II. Energy and Chemical Reactions
II. Energy and Chemical Reactions
4. Catalyst: a substance that enables a
chemical reaction to proceed at a faster rate
WITHOUT being changed by the reaction
II. Energy and Chemical Reactions
5. Enzyme: a protein that increases the rate of a
chemical reaction WITHOUT being changed
by the reaction; an organic catalyst
II. Energy and Chemical Reactions
5. Enzyme: a protein that increases the rate of a
chemical reaction WITHOUT being changed
by the reaction; an organic catalyst
Enzymatic
activity of
carbonic
anhydrase
Homework
Read Ch 2 Sec 2, pgs 35-36
Problem #'s 3, 4, 6 & 7