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Chapter 8 Review!
Cellular Energy
Directions
• Work in a group of 3-4 students • We will go group by group to answer a question.• If a group cannot answer a question correctly,
the first group to raise their hand and is called on may answer the question.
• There is no penalty for guessing. • Team with the most points at the end wins! • I may deduct points for disruptive behavior …
Here we go …
Good luck!
Energy is …
The ability to do work
The first law of thermodynamics states that …
Energy is neither created nor destroyed, it is just transferred
The second law of thermodynamics states that …
Energy cannot be transferred 100% - some energy is lost in the
process
How do autotrophs obtain energy?
The produce it themselves – photosynthesis or chemosynthesis
How do heterotrophs obtain energy?
By eating other organisms
What is the ultimate source of energy for all living things? Why?
The sun; autotrophs are dependent on the sun & heterotrophs are dependent
on autotrophs
An example of chemical energy is
ATP
How is energy released from ATP?
When ATP loses a phosphate and is converted to ADP
Can ADP be re-charged?
Yes, by adding a phosphate group
ADP + P ATP
Which of the diagrams in Figure 8-1 show
how energy is produced in a cell?
All of the following are parts of ADP except …
The process whereby plants capture energy and make
complex molecules is known as…
Photosynthesis
In which organelle does photosynthesis take place?
The chloroplast
Tell me the equation for photosynthesis
6CO2 + 6H2O + light C6H12O6 + O2
C6H12O6 is …
Glucose
Photosynthesis is broken into 2 phases. What are they?
1. Light dependent reaction
2. Calvin cycle or light independent reaction
Where does the light dependent reaction occur?
Thylakoid
What is produced in the light dependent reaction? What are
their fates? ATP, NADPH, oxygen
Where does the Calvin cycle take place?
Stroma
Which photosynthesis reactant is needed for the Calvin cycle to
take place? Carbon dioxide
Which photosynthesis product is produced in the Calvin cycle?
Glucose
What do you think would happen to glucose production in
photosynthesis if CO2 was removed from the environment?
No sugars would be produced b/c the Calvin cycle requires CO2
What does the Calvin cycle send back to the light dependent
reaction? ADP
Identify the main energy-trapping molecule in plants.
Chlorophyll
Why do plants appear green?
Because chlorophyll reflects green light
A substance, produced during the process of photosynthesis, that is
used for completion of cellular respiration is …
Oxygen
What happens during glycolysis?
1. Glucose is split
2. Pyruvate is made
3. ATP is made
What is the process called when organic compounds are broken
down in the absence of oxygen? Anaerobic respiration or
fermentation
In what organisms does alcoholic fermentation take place?
Yeast and bacteria
When muscles are exercised extensively in the absence of
sufficient oxygen, ________ is produced.
Lactic acid
Which of the following is not apart of cellular respiration: electron
transport, glycolysis, Krebs cycle, Calvin cycle
The Calvin cycle … it’s apart of photosynthesis!
The major atmospheric byproduct of photosynthesis is …
Oxygen
Our goal …
Is for EVERYONE to earn an 80% (a B or better!) on tomorrow’s
exam!