photosynthesis. which of the following is a product of photosynthesis? a. water b. glucose c. carbon...
TRANSCRIPT
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Photosynthesis
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Photosynthesis
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Which of the following is a product of photosynthesis?
A. WaterB. GlucoseC. Carbon DioxideD. Sunlight
Wate
r
Glucose
Carbon Dioxid
e
Sunlight
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In addition to sunlight, what are the other reactants for the process of photosynthesis?
A. Water and oxygen
B. Water and glucose
C. Oxygen and carbon dioxide
D. Water and carbon dioxide
Wate
r and oxy
gen
Wate
r and gluco
se
Oxyge
n and ca
rbon dioxid
e
Wate
r and ca
rbon dioxid
e
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Pigments of Photosynthesis
Pigments are molecules that absorb specific wavelengths (energies) of light and reflect all others.
Chlorophyll is the main pigment in charge of capturing the energy from sunlight.
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•Chlorophyll a absorbs …………….. light best.•Chlorophyll b absorbs ……………. light best.
•Why do plants look green?•THEY RELFECT GREEN LIGHT!!!
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Chloroplast Structure
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Chlorophyll is a pigment in the chloroplast that
A. stores and releases energy
B. absorbs sunlight
C. Carries high energy electrons
D. Makes glucosesto
res and re
leases e
nergy
absorb
s sunlig
ht
Carries h
igh energy elect.
..
Makes g
lucose
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Chloroplasts do not contain which of the following structures?
A. MitochondriaB. ThylakoidsC. StromaD. Chlorophyll
Mito
chondria
Thylakoids
Stroma
Chlorophyll
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What is the process in which autotrophs trap the energy from the sun and store this energy in molecules such as glucose.
A. PredationB. MetabolismC. Cell RespirationD. Photosynthesis
Predation
Meta
bolism
Cell Resp
iration
Photosy
nthesis
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H2O
1.Write down 3 observations of the diagram below.2. Share with a partner.3. Share with the class! Discuss!!
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Remember ATP??
ATP Adenosine triphosphate 3 phosphate groups
ADP Adenosine diphosphate 2 phosphate groups
Compound that cells use to store and release energy
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Chemical Energy and ATP
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Electron Carrier Molecule
Electron Carrier Molecules Compound that can accept a pair of high energy
electrons and transfer them, along with most of their energy to another molecule
One way the sunlight can be trapped in a chemical form and use it to build glucose for the plant cell
Example: NADP+ = accepts and holds 2 high energy electrons
along with a hydrogen ion (H+) When NADP+ accepts 2 electrons and a H+ it
becomes NADPH
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Photosynthesis: Step 1 – Light-Dependent Reaction
Takes place in Thylakoids. Chlorophyll absorbs light energy from the sun. Water is then split into hydrogen (H) and oxygen (O). The oxygen is released to the atmosphere. Produces NADPH and ATP for the Calvin Cycle (step 2)!
H2O
INSunlightWater ADPNADP+
OUTOxygenATPNADPH
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Photosynthesis: Step 2 – Light-Independent
ReactionTakes place in Stroma.
Also called the Calvin Cycle or Dark Reactions.
CO2 (carbon dioxide) combines with hydrogen (H) to form C6H12O6 (glucose).
The NADPH made in the light-dependent reactions provides the Hydrogen for the glucose
The ATP made in light-dependent reactions provides the energy for the Calvin Cycle to occur.
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What affects the rate of photosynthesis?
Amount of :- sunlight- CO2
- H2O
- temperatureAll the reactions of photosynthesis are controlled by enzymes. Temperatures above or below the optimum temperature will slow down the chemical reactions.
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GET YOUR CLICKERS!
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Energy from the sun is collected during the:
A. Light-independent reactions
B. Light-dependent reactions
C. Thylakoid reactions
D. Krebs Cycle
Light-i
ndependent reacti
ons
Light-d
ependent reacti
ons
Thylakoid re
actions
Krebs C
ycle
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Glucose is created during this step of photosynthesis.
A. Light-independent reaction
B. Light-dependent reaction
C. Thylakoid reactions
D. Krebs Cycle Li
ght-independent r
eaction
Light-d
ependent reacti
on
Thylakoid re
actions
Krebs C
ycle
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Which of the following would not directly impact the growth of a plant?
A. Spectrum of light
B. Concentration of oxygen
C. Concentration of carbon dioxide
D. Availability of water
E. TemperatureSpectr
um of ligh
t
Concentra
tion of oxyg
en
Concentra
tion of carb
on ...
Availa
bility o
f wate
r
Temperature
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Which of the following is NOT produced in the light-dependent reactions?
1. NADPH2. Sugars3. Hydrogen Ions4. ATP
NADPH
Sugars
Hydroge
n Ions
ATP
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