Name ___________________ Date __________________ Period ________ # _____
Neoscience Tutorial on Photosynthesis
http://www.neosci.com/demos/10-1071_Photosynthesis/Presentation.html
Slide 1
1.
How are all organisms directly or indirectly affected by photosynthesis?
2.
These three organisms use photosynthesis as a means to produce their own food.
_________________, ________________, and ________________
3.
Write the entire equation for photosynthesis.
Slide 2
1.
What is a pigment?
2.
These two colors (wavelengths of light) are absorbed more by a plant than any
other of the visible spectrum. __________________ and __________________
Slide 3
1.
These are the two types of chlorphylls that are found in plants.
_____________________ and ____________________
2.
This type is responsible for donating electron (photons of light) during the light
reactions and is therefore known as the primary photosynthetic pigment
Slide 4
1.
These pigments are those that are responsible for all of our beautiful fall colors as
chlorophyll a becomes inactive while these are shown. ________________
________________
2.
With a peak wavelength of 453 nm, ____________________is dark to olive green
in color.
3.
Other accessory pigments include _____________ which are orange in color and
xanthophylls which are _________________ in color.
Slide 5 (Explanation of the Calvin cycle/light-independent reactions)
1.
The ___________ cycle (light-independent reactions) occur second during
photosynthesis in the stroma of the chloroplast.
2.
Even though these reactions do not require light, they need the products of the
light reactions ___________ and _________ to produce the 3 carbon sugar.
Slide 6
1.
This enzyme is responsible for allowing the chemical reactions in the Calvin cycle
to occur. _____________________
2.
This compound is remade at the end of the Calvin cycle so that the process is
continuous. ____________________
Name ___________________ Date __________________ Period ________ # _____
Slide 7
1.
White light can be broken up into its visible spectrum. List the colors of the
visible spectrum in order from decreasing to increasing wavelength. ________________,
________________, _______________, ________________, _________________,
_______________, and ________________
Slide 8
1.
This is the action spectrum for chlorophyll a. ____________ @ about 680 nm.
Slide 9 (Explanation of the light dependent reactions)
1.
What part of the chloroplast does the chlorophyll a and the primary electron
acceptor (NADP+) capture sunlight and start the chemical reactions of the light reactions?
2.
These are the two photo systems found in the thylakoid membrane each
responsible for capturing a certain wavelength of light. _________________(P700)
and ____________________(P680)
Slide 10
As the wavelengths of light absorbed by the photosynthetic pigments strike the reaction
center of___________________, a pair of _____________becomes energized and is
passed from chlorophyll a to the primary electron acceptor. These electrons are then
passed down an___________________________, to the reaction center chlorophyll a
molecule in____________________. More light energy causes these electrons to be
boosted again and passed down a second electron transport system, until finally they are
used to reduce NADP to ___________. This compound moves to the stoma where it can
be used in the Calvin cycle.
Slide 11
1. In P680 the electon attraction is so strong that it rips the __________ molecules
apart.
2. This process allow oxygen to ___________ out of the plant and _________ to build
up within the thylakoid membrane.
Slide 12
1. What is chemiosmosis?
2.
In what other cell organelle does this occur in?
Slide 13-15
1. The proton motive force created due to a buildup of protons in the thylakoid
membrane causes ___________ to be made by using ATPase to bind ADP to Pi (located
in the stroma). This all occurs in a protein channel located on the thylakoid membrane.
2. NADP gets reduced to _____________ which transfers its energy rich electrons to
the __________ cycle which at its end will allow the plant to make ____________ for
itself.
Name ___________________ Date __________________ Period ________ # _____
Neoscience Tutorial on Photosynthesis
Slide 1
1.
How are all organisms directly or indirectly affected by photosynthesis? Most
food webs start with a producer’s energy.
2.
These three organisms use photosynthesis as a means to produce their own food.
plants, cyanobacteria, and algae
3.
Write the entire equation for photosynthesis.
Slide 2
1.
What is a pigment? A pigment is a substance that absorbs light at a specific
wavelength.
2.
These two colors (wavelengths of light) are absorbed more by a plant than any
other of the visible spectrum. red and blue
Slide 3
1.
These are the two types of chlorphylls that are found in plants. Chlorophyll a and
chlorophyll b.
2.
This type is responsible for donating electron (photons of light) during the light
reactions and is therefore known as the primary photosynthetic pigment chlorophyll a
Slide 4
1.
These pigments are those that are responsible for all of our beautiful fall colors as
chlorophyll a becomes inactive while these are shown. Accessory pigments
2.
With a peak wavelength of 453 nm, chlorophyll b is dark to olive green in color.
3.
Other accessory pigments include carotenes which are orange in color and
xanthophylls which are yellow in color.
Slide 5 (Explanation of the Calvin cycle/light-independent reactions)
1.
The Calvin cycle (light-independent reactions) occur second during
photosynthesis in the stroma of the chloroplast.
2.
Even though these reactions do not require light, they need the products of the
light reactions NADPH and ATP to produce the 3 carbon sugar.
Slide 6
1.
This enzyme is responsible for allowing the chemical reactions in the Calvin cycle
to occur. Rubisco
Name ___________________ Date __________________ Period ________ # _____
2.
This compound is remade at the end of the Calvin cycle so that the process is
continuous. RuBP (ribulosbiphosphate)
Slide 7
1.
White light can be broken up into its visible spectrum. List the colors of the
visible spectrum in order from decreasing to increasing wavelength. Violet, indigo, blue,
green, yellow, orange, red
Slide 8
1.
This is the action spectrum for chlorophyll a. Red-orange @ about 680 nm.
Slide 9 (Explanation of the light dependent reactions)
1.
What part of the chloroplast does the chlorophyll a and the primary electron
acceptor (NADP+) capture sunlight and start the chemical reactions of the light reactions?
Thylakoid membrane
2.
These are the two photo systems found in the thylakoid membrane each
responsible for capturing a certain wavelength of light. Photosystem I (P700)
and Photosystem II P680)
Slide 10
As the wavelengths of light absorbed by the photosynthetic pigments strike the reaction
center of Photosystem II , a pair of electrons becomes energized and is passed from
chlorophyll a to the primary electron acceptor. These electrons are then passed down an
electron transport system, to the reaction center chlorophyll a molecule in Photosystem I.
More light energy causes these electrons to be boosted again and passed down a second
electron transport system, until finally they are used to reduce NADP to NADPH. This
compound moves to the stoma where it can be used in the Calvin cycle.
Slide 11
1. In P680 the electon attraction is so strong that it rips the water molecules apart.
2. This process allow oxygen to diffuse out of the plant and protons to build up within
the thylakoid membrane.
Slide 12
1. What is chemiosmosis? A process of proton pumping inside the thylakoid and
electron transfer occurring in the membrane that is happening at the same time
2.
In what other cell organelle does this occur in? mitochondria
Slide 13-15
1. The proton motive force created due to a buildup of protons in the thylakoid
membrane causes ATP to be made by using ATPase to bind ADP to Pi (located in the
stroma). This all occurs in a protein channel located on the thylakoid membrane.
2. NADP gets reduced to NADPH which transfers its energy rich electrons to the
Calvin cycle which at its end will allow the plant to make sugar/carbs for itself.