NAME _________________________
WHAT SHOULD I KNOW for the ENERGY Test (Ch. 8/9)? KEY
Ch. 8: Photosynthesis
1)
a.What is an autotroph? Give examples:
Makes their own energy. Plants, algae
b. What is a Heterotroph? Give examples.
Relies on others for energy. Dogs, humans
2)
Which molecule is used by living things to store and transfer energy?
ATP
3)
What are the parts of an ATP
molecule?
A = _Nitrogenous Base______________
B= __Ribose______________________
C = _3 phosphate groups ____________
4)
Write the equation that shows how ADP is changed into ATP.
ADP + Pi  ATP (stored energy)
5)
Which molecule stores more than 90 times the energy in ATP?
glucose
6)
Be able to tell the contributions of these scientists to our understanding of
photosynthesis.
Jan van Helmont: Plants gain mass from water
Jan Ingenhousz: Plants require light
Joseph Priestley: Plants produce oxygen
7)
8)
Melvin Calvin: Plants use CO2 to
produce sugars (C6H12O6)
Be able to write the chemical equation for photosynthesis:
Light + 6CO2 + 6H2O  C6H12O6 + 6O2
What is a pigment? Light absorbing molecule
9)
What is the main pigment used by green plants to absorb energy? chlorophyll
10) Which wavelengths of light are best absorbed by chlorophyll a & b?
Chl a – blue-violet and red (450 and 700nm). Chl b – blue and red (500 and 700nm)
11) Why do plants look green? Reflect green
Label the parts of a chloroplast and tell where the reactions for photosynthesis happen.
A= _Thylakoid________________
B= __Stroma_________________
C= _Granum__________________
D= __Lumen__________________
E= __Cytoplam of Plant Cell ______
12) Place where light dependent
reactions happen = _A___
13) Place where Calvin cycle happens = _B____
14) What is NADP+ ? What does it do?
Electron carrier, it shuttles electrons energized by sunlight to the dark reactions.
15) Where does the H that ends up in NADPH originally come from? Water (H2O gets split
into Oxygen and Hydrogen)
16) Be able to describe the two sets of reactions involved in photosynthesis
Light-dependent reactions, Calvin cycle. And Labe:
Ch. 9: Cellular Respiration
17. Be able to label parts in a
mitochondrion and tell where
the different reactions happen.
Intermembrane Space
Inner Membrane
(Cristae)
Matrix
18. What is a calorie? Amount of energy
needed to raise 1 g of water 1 deg
Outer Membrane
Celsius
19. What is a Calorie? Kilocalorie
(1000 calories) – what’s on food labels
20. What is the chemical formula for cellular respiration?
C6H12O6 + 6O2  6CO2 + 6H2O + ATP
21. How does this equation compare to the equation for photosynthesis?
It’s the exact reverse, except Light energy is replaced by cellular energy (ATP).
22. Be able to describe the steps of the pathways for:
Glycolysis, alcoholic fermentation, lactic acid fermentation, Krebs cycle, and
Electron transport chain. Also, be able to label the summary diagram:
23. Does glycolysis require oxygen? NO
24. Which molecule forms when glucose is broken in half? pyruvate
25. What is the other name for Krebs cycle? Citric Acid Cycle
26. What happens to CO2, produced during the Krebs cycle? Gets released to the
atmosphere. If an animal – breathes it out.
27. What is the final electron acceptor at the end of Electron Transport?
Oxygen
28. What does anaerobic mean? What does aerobic mean?
anaerobic – without oxygen
aerobic – with oxygen
29. What are the two kinds of fermentation?
Lactic acid and alcoholic
30. Why do cells use fermentation? (Hint: It’s NOT to make alcohol or lactic acid)
To empty the electron carrier NADH created by glycolysis. It gives the
electrons a place to go so that NAD+ is regenerated and glycolysis can
continue thereby producing ATP for the organism.
Remember – fermentation does NOT produce ATP for the organism, just
allows glycolysis to continue repeating.