BIO 2 GO!
Cellular Respiration
and ATP
3135, 3137
Cellular Respiration creates energy (ATP) for the cells to use for all of
their life functions. Aerobic cellular respiration requires oxygen.
Anaerobic cellular respiration does not require oxygen.
As a result of this unit, you should be able to do the following:
1. Explain the function of cellular respiration
2. Compare and contrast the 2 types of cellular respiration.
3. Write the equation for aerobic cellular respiration.
4. Explain in detail, the process of aerobic cellular respiration.
5. Describe ATP
6. Explain how ATP is used by the cells.
7. Use the following words in their correct context.
a.
b.
c.
d.
e.
f.
g.
cellular respiration
aerobic cellular respiration
anaerobic cellular respiration
ATP
glucose
carbon dioxide
oxygen
Cellular Respiration and ATP
3135, 3137
Cellular respiration creates energy in the form of ATP for the cell too use
for all life functions.
There are 2 types of cellular respiration: 1) aerobic and 2) anaerobic. In
both cases, the function of respiration is to create energy that is useful to the
cells.
1) Aerobic Cellular Respiration: Respiration that uses oxygen is called aerobic
respiration. Aerobic respiration creates a lot of useful energy. It creates more
energy than anaerobic. It is the most common and familiar to humans.
2) Anaerobic Respiration: Respiration that does not require oxygen is called
anaerobic respiration. Anaerobic does not create much energy. It creates less
energy than aerobic. Anaerobic bacteria that live in soil and have less access to
oxygen do this.
REMEMBER THS !!!
Aerobic cellular respiration requires oxygen and releases a lot of energy.
Anaerobic cellular respiration does not require oxygen and releases small
amounts of energy. Aerobic creates more energy than anaerobic. They both
produce energy that is useful to the cells.
Question 1. Explain the function of cellular respiration.
Question 2. What are the two differences between aerobic cellular respiration
and anaerobic cellular respiration?
Aerobic Cellular Respiration
During aerobic cellular respiration glucose (food) combines with oxygen to
create energy, carbon dioxide, and water. The purpose of cellular respiration is to
create energy. The energy that is created is useful to the living organism. Cellular
respiration takes place in all of the cells of both plants and animals.
REMEMBER THIS !!!
The equation for aerobic cellular respiration:
Glucose + oxygen  ENERGY (ATP) + carbon dioxide + water
Or
C6H12O6 + 6O2 → Energy + 6CO2 + 6H2O
Interesting Scientific Fact: If you were to reverse the equation for aerobic
cellular respiration, it would be the equation for photosynthesis. The waste
products of respiration are the starting chemicals for photosynthesis. The waste
products for photosynthesis are the starting chemicals for respiration. They are a
cycle.
ATP
The energy that is created during cellular respiration is stored as ATP. ATP is
a molecule that stores and releases energy whenever a cell needs it. The energy
released from ATP allows the cells to function properly. Most of the energy that
is released from ATP is in the form of heat.
Interesting Scientific Fact: The heat given off by the release of energy from ATP
is what creates your body temperature. That is why when you are exercising, you
are warmer than when you are resting. When you are exercising, more cells are
using aerobic cellular respiration to make energy. Therefore, when you are
exercising, more ATP molecules are being converted into energy which then
creates more body heat, but can also be use top help organisms move and provide
electrical energy to run the nervous system.
REMEMBER THIS !!!
ATP is the energy molecule. It can store and release energy as the cell
requires it.
Question 3. Without looking, write the equation that describes aerobic cellular
respiration.
Question 4. What is ATP? How is it used by the cell?
How Aerobic Cellular Respiration works:
Glucose is a carbohydrate. Remember! Carbohydrates are the energy
containing organic molecules. Glucose is created through the digestion of
carbohydrates in food.
Oxygen is one of the gases in the air. When you breathe, you bring oxygen into
your body. The oxygen is then moved to your cells.
The glucose from the food you eat, and the oxygen from the air you breathe is
both present in every cell. During the process of aerobic cellular respiration they
are combined to release energy in the form of ATP, along with the waste products
carbon dioxide, and water.
Question 5. Explain aerobic cellular respiration and ATP.
Interesting Scientific Fact: The mitochondrion is the cell part that performs
aerobic cellular respiration. In certain muscle cells that are very active and
require a lot of energy, there may be hundreds of mitochondria. (You will need to
remember mitochondria and their function for a later unit.)
Question 6. What cell structure performs cellular respiration?
Summary
Cellular Respiration and ATP
3135, 3137
Cellular respiration is the process of breaking apart glucose molecules to
get energy. There are two types of cellular respiration:
1. Aerobic Respiration – Using oxygen to break down glucose to release large
amounts of ATP energy.
2. Anaerobic Respiration - Breaking down glucose to release smaller amounts
of ATP energy with no oxygen present.
In both processes, the energy given off is stored in a smaller molecule called
ATP. ATP is an abbreviation for a long chemical name. Whenever a cell needs
energy, it uses ATP molecules. If a cell runs out of ATP, it cannot carry out its
reactions and will die.
One difference between aerobic and anaerobic respiration is that many,
many more ATP can be created during aerobic respiration than during anaerobic.
So whenever a cell is using energy, it is using energy stored in its ATP
molecules. Each cell needs to create its ATP, so it must perform cellular
respiration.
The general equation for aerobic respiration:
Glucose and oxygen combine to create ATP(energy) and the waste products carbon
dioxide and water.
C6H12O6 + 6O2 → Energy + 6CO2 + 6H2O
Cellular Respiration and ATP
3135, 3137
Self Test
Matching
_____ 1. cellular respiration
_____ 2. aerobic respiration
_____ 3. anaerobic respiration
_____ 4. ATP
_____ 5. glucose
_____ 6. carbon dioxide
a. a waste product of cellular respiration
b. a carbohydrate full of stored energy
c. a small molecule used by the cell for
energy
d. the process of breaking glucose apart to
get energy
e. breaking down glucose with oxygen
present
f. breaking down glucose with no oxygen
True or False
______ 1. During cellular respiration, ATP is broken down.
______ 2. During cellular respiration, glucose is broken down.
______ 3. During aerobic respiration, oxygen is present.
______ 4. During aerobic respiration, oxygen is not present.
______ 5. During aerobic respiration, ATP are created
______ 6. During aerobic respiration, ATP are destroyed.
______ 7. During anaerobic respiration, oxygen is present.
______ 8. During anaerobic respiration, oxygen is not present.
______ 9. During anaerobic respiration, a lot of energy is created
______ 10. During aerobic respiration, a lot of energy is created
______11. If a cell doesn’t carry out cellular respiration, it cannot create its ATP.
______ 12. If a cell doesn’t have any ATP, it will die.
______ 13. The general equation for aerobic respiration shows energy as a
product
______ 14. The waste products of cellular respiration are glucose and oxygen.
______ 15. The waste products of cellular respiration are carbon dioxide and
water.
Fill in the Blank
cellular respiration
glucose
carbon dioxide
aerobic
ATP
water
anaerobic
oxygen
created
1. All cells need ________ molecules to carry out their functions that require
energy.
2. The ATP molecules in a cell must be ___________by cellular respiration.
3. ___________________ is the process that provides the energy to
create ATP molecules.
4. During ____________ respiration, oxygen is present and many ATP
molecules can be created.
5. During _____________ respiration, oxygen is not present and only a few ATP
can be created.
6. The energy to create these ATP molecules comes from the molecule
____________ which is in the food we eat.
7. The waste products of aerobic respiration are _________________ and
___________.
8. An organism that doesn’t have food or ________________ is likely to die
because it cannot create its ATP.
Answer the Following
1. What is the purpose for cellular respiration?
2. What are the two types of cellular respiration?
3. Which type of cellular respiration creates the most ATP?
4. How would you describe ATP?
5. Explain the function of ATP.
6. What is the general equation for aerobic cellular respiration?
7. What is the name of the cell part that performs aerobic cellular respiration?
8. Explain how aerobic cellular respiration and photosynthesis are related.
Bio-2-Go
Cellular Respiration and ATP
3135, 3137
Answer Sheet
Question 1. Explain the function of cellular respiration.
Question 2. What are the TWO differences between aerobic cellular respiration
and anaerobic cellular respiration?
Question 3. Without looking, write the equation that describes aerobic cellular
respiration.
__________+____________- _________+__________+_________
Question 4. What is ATP? How is it used by the cell?
Question 5. Explain aerobic cellular respiration and ATP.
Question 6. What cell structure performs cellular respiration?