Catalyst #5: January 21st 2015
1st – 3rd
 Some
scientists believe that too much carbon
dioxide in the atmosphere causes global
warming—a gradual increase in the
temperature of the earth. What effect do
plants have on the amount of CO2 in the
atmosphere?
 What
would happen to the amount of CO2 in
the air if many forests were cleared (trees
were cut down)?
Catalyst #5: January 21st, 2015:
5th-7th
 1.
Name at least two differences between the
light dependent and independent reactions
of photosynthesis.
 2.
What are the three parts of an ATP
molecule?
Agenda
Catalyst
(5 minutes)
Opening Questions (5 minutes)
Intro to Cellular Respiration (10
minutes)
Partner puzzles (Remainder)
Homework:
 DBA
13
 Flipped Video: Respiration
 Passive and Active Transport mastery
Announcements
 Quarter
3 Honors Project Options
Unit 5: Guiding Questions
How
do plants make food for
themselves?
Why do all organisms need some
source of food?
Why do we and most other
organisms need oxygen?
Today’s SPI & Objectives
 SPI
3210.3.2 Distinguish between aerobic
and anaerobic respiration.
 SWBAT
define cellular respiration
 SWBAT describe the energy
transformation that occurs during cellular
respiration
 SWBAT express cellular respiration in the
form of a chemical equation and identify
its reactants and products
Intro to Cellular Respiration
Biology
Opening Questions (3 minutes)
Take 2 or 3 minutes to think about the
following questions independently or
discuss with a partner sitting near you.
1. Why do we need food? (Be as specific
as possible)
2. Why do we need oxygen? (Be as
specific as possible)
3. What do we breathe out?
4. What part of the cell produces energy?
Introduction
 All
organisms need food so that they can
produce the energy they need to survive
 Autotrophs
 Quick
produce their own food
photosynthesis review
 Heterotrophs
acquire food from different sources
 Carbohydrates,
such as glucose, are our main
source of short-term energy
 Almost all organisms also need oxygen in order
to produce energy
 Some
bacteria do not need oxygen to survive
Cellular Respiration
Key
Point 1: Cellular respiration is the
process by which all cells produce
energy in the form of ATP
Plants,
animals, humans, etc. all use it
ATP=adenosine triphosphate
ATP is the main molecule that cells use
as energy
Energy Transformation
Key
Point 2: Cellular respiration converts
one form of chemical energy (glucose)
into a form of chemical energy (ATP)
that can be used by the cell
 Essentially,
cells are converting food into
energy that they can use
Balanced Equation
Key
Point 3: The balanced equation for
cellular respiration is:
C6H12O6 + 6 O2  6 CO2 + 6 H2O + (36 ATP)
 Note:
This is the opposite of the
photosynthesis equation
The
products of photosynthesis are the
reactants of cellular respiration and vice
versa
What
does each chemical formula
represent?
Reactants and Products
Key
Point 4: The reactants of cellular
respiration are glucose and oxygen,
and the products are carbon dioxide,
water, and ATP
Glucose
is in many foods (fruits,
vegetables, bread, etc.), and oxygen
comes from the air
Carbon dioxide is what we exhale
Leaves
our cells, enters our blood, travels
to the lungs
Next Class
Cellular
respiration actually
occurs in three stages
Tomorrow we will learn
about the first phase
Puzzle Partners





1. Work with 1-2 people or yourself.
2. Follow the instructions on the handout. (You
MAY write on the handout.)
3. When you and your partner(s) have
completed the questions, answer the
Extension questions.
4. Any work not completed in class is due next
class period.
5. Scissors and materials are located at the
front.
Exit Ticket
 Answer
1.
2.
3.
the questions below on your
warm-up slip without using your notes
What process do all living organisms
use to produce energy?
What two substances are needed
to produce energy for our cells
What type of energy is produced by
our cells?