Do Now
1. Define respiration
1. Why do organisms need energy?
1. What part of the organism actually uses the
energy?
1. Which organic compound provides immediate
energy for living organisms?
Glucose molecule= C6H12O6
Write a summary equation for cellular
respiration
AIM: How do cells release the energy
from the glucose molecule?
I. Two kinds of respiration
A. Anaerobic
B. Aerobic
II. Two levels of respiration
A. Cellular- Chemical reaction
B. Organism- How organisms exchange respiratory
gases (CO2 and O2)
Cellular respiration
A. Anaerobic Respiration (aka Fermentation)
1. Word equation
• Yeast: (Important in brewing and baking)
Glucose Alcohol + Carbon dioxide + Energy
C6H12O6  C2H5OH +
CO2
+ ATP
• Animals: (In muscle cells during exercise)
Glucose  Lactic Acid + Energy
C6H12O6  C3H6O3
+ ATP
2. Chemical Reaction
DO NOW
• Summary equation for anaerobic respiration:
• Word equation:
• Chemical reaction:
Summary
• What is the MAIN product of respiration?
• What are the by-products of aerobic
respiration?
• What is the net gain of ATP molecules per
each glucose molecule?
• Are there any C-C or C-H bonds left in the byproducts?
• Name 2 aerobes
• Write a summary equation for aerobic
respiration
• Which process produces more energy for the
cell to use? How do you know?
• Which process is more efficient? How do you
know?
Do Now
• Which biochemical is needed by organisms to
carry out the life processes?
• From where do organisms get this biochemical?
• Where in an organism does the chemical process
of respiration take place?
• What is ATP?
• Organisms need substances called adenine
and phosphates to build ATP molecules. From
where do organisms get these materials?
(Think-pair-share)
ATP
• ATP works like a rechargeable battery. Energy
can be released by converting ATP to ADP,
which is like the “uncharged” form.
• By binding to a phosphate group, ADP can be
converted back to ATP the “charged” form.
Check your understanding…
In living plants, when does respiration
occur?
1. only during digestion
2. only in the daytime
3. only in total darkness
4. all the time
A compound that is synthesized by
both humans and geranium plants
is
1. cellulose
2. ATP
3. ethyl alcohol
4. chlorophyll
In humans, which substance is
produced anaerobically during
strenuous activity?
1. lactic acid
2. glycogen
3. carbon dioxide
4. alcohol
In the process of photosynthesis,
chlorophyll serves as
1. an end-product
2. a raw material
3. an energy converter
4. a hydrogen acceptor
Which process provides most of
the oxygen found in Earth's
atmosphere?
1. photosynthesis
2. aerobic respiration
3. dehydration synthesis
4. fermentation
Through the use of oxygen-18
(heavy oxygen), scientists have
found that the oxygen released
during photosynthesis comes from
molecules of
1. carbon dioxide
2. water
3. glucose
4. chlorophyll
Regents Practice Question # 9
The diagram below represents a plant cell.
Which process takes place in
structure A?
(1) cellular respiration
(2) heterotrophic nutrition
(3) digestion of fats
(4) protein synthesis
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Regents Practice Question # 11
The diagram below represents a biochemical process.
Which molecule is represented by X?
(1) DNA (2) protein
(3) starch
(4) ATP
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Regents Practice Question # 12
In what way are photosynthesis and cellular
respiration similar?
(1) They both occur in chloroplasts.
(2) They both require sunlight.
(3) They both involve organic and inorganic
molecules.
(4) They both require oxygen and produce
carbon dioxide
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Regents Practice Question # 13
. The diagram below represents a cell found in some complex organisms. The enlarged section
represents an organelle, labeled X, found in this cell.
Describe the function of organelle X and explain how it is important to the
survival of the cell. In your answer, be sure to:
• identify organelle X [1]
• state the process that this organelle performs [1]
• identify the two raw materials that are needed for this process to occur [1]
• identify one molecule produced by this organelle and explain why it is important to
the organism [2]
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Regents Practice Question # 13 (Answer)
•Organelle x is the mitochondria
•It is the site for cellular respiration to take place.
•Glucose and Oxygen are the raw materials.
•ATP is a molecule that is produced from cellular
respiration. It is important because it is the fuel for
the cell.
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