Download A.P. Biology-Unit 5 Name: Cellular Respiration/Photosynthesis

A.P. Biology-Unit 5
Cellular Respiration/Photosynthesis Review Sheet
Name:
1. Write the formulas for Cellular Respiration/Photosynthesis. Give overall purpose of
each.
CR-converts stored energy (glucose)
usable energy (ATP)
Enzymes
C6H12O6+6O2
6CO2+6H2O+38ATP+Heat
Photo-converts light energy to stored chemical energy (glucose)
Enzymes
6CO2+12H2O
C6H12O6+6O2+6H2O
Light, Chlorophyll
2. Draw “circle picture”-make 3-4 summary statements about its importance.
1. Sun is ultimate source of energy for most of life on earth (cells).
2. Energy is not recycled. The sun must shine. When ATP is used, work is done. That
energy is not put back into cells.
3. Matter is used in converting usable energy is recycled (CO2, H2O, O2).
Sun
PS
CO2
H2O/enzymes
C6H12O6+O2
ATP and work
3.
4.
5.
6.
CR
Define Endergonic/Exergonic, Catabolic/Anabolic, and Energy Coupling. Give an
example of each from both Cellular Respiration and Photosynthesis. (Include ATP and
glucose in each example)
1. Energy is released from the sun (exergonic) and through photosynthesis is used first to
make ATP (endergonic) and NADPH which is immediately released (exergonic) to go into
the bonds of newly made glucose (endergonic).
2. In CR, the glucose is broken down (exergonic) and the released energy is put (endergonic)
into the bonds of ATP.
Study leaf and stomata.
Study both 1 page papers.
Complete the chart below:
Process
CR
Step
1-Glycolysis
2-Int. Step
3-Kreb’s Cycle
4-ETS
Photo
1-LDR
Purpose
Make Pyruvic
acid
w/ O2: make
acetyl CoA
w/out O2:
fermentation
Get rest of
energy from
molecules
Convert NADH
& FADH2 to
ATP
Convert sun to
usable energy
Where
Cytoplasm
Outcome
-2ATP+4ATP+2NADH
Cytoplasm
Mitochondria
Cytoplasm
2NADH
Mitochondrial
Matrix
2ATP+6NADH+2FADH2
Cristae of
Mitochondria
34 ATP
Thylakoid
Membrane
Cyclic=ATP
Noncyclic=ATP+NADPH+O2
Lactic Acid/alcohol
A.P. Biology-Unit 5
Cellular Respiration/Photosynthesis Review Sheet
2-LIR
Convert usable
energy to stored
Stroma
Name:
C6H12O6
7. Define the following terms: (Be sure to use and explain the words in ( ) in your
explanation.
a. Electron Transport (cytochrome, redox, cristae, thylakoid)
 Moving e- (from the H picked up by NAD+) from cytochrome (proteins with Fe
that do redox reactions) to cytochrome to pump H+ to one side of a membrane
(cristae or thylakoid)
 Reduction=gain e Oxidation=lose e- (Leo Ger)
 In CR- final e- acceptor= O2
 In Photo-NADPH
b. Chemiosmosis (oxidative phosphorylation)
 Using H+ conc. Gradient to make ATP. H+ move through ATP Synthase to
provide energy to convert ADP to ATP.
 Oxidative phosphorylation-uses O2 as final e- acceptor
 Photophosphorylation- uses sun’s energy to make ATP (final
acceptor=NADPH)
c. Substrate Level Phosphorylation (and where)
 Where=Glycolysis and Kreb’s Cycle
 Creating ATP without ETS
 Enzymes move P from a substrate to ADP
d. Photosystem (other pigments)
 A chlorophyll a pigment molecule that can gather up sun’s energy from other
pigments (dif. Pigments gather different wavelengths of light) and use energy to
raise an e- to a higher energy level
e. ATP (work)-“usable” energy for the cell. Energy is stored in bonds of the molecule (P
bonds). When ATP is dephosphorylated, energy is released (exergonic) so that other
molecules can be phosphorylated, and thus, do work in the cell.