UTF-8
My report on "Harvesting Light for Photosynthesis"
My report on "Harvesting Light for Photosynthesis"
Student name: Adam Lalami
Teacher name: null
School: Collin County College
Submission Time: 7/6/14 3:04 PM
Page 1 : http://mw2.concord.org/public/part2/photosynthesis/page1.cml
1. What color light has the highest frequency?
(a) Red.
(b) Yellow.
(c) Green.
(d) Blue.
My answer is (d) (2:15:27 PM)
2. Which photon has the lowest amount of energy?
(a) Infrared.
(b) Orange.
(c) Violet.
(d) Ultraviolet.
My answer is (a) (2:15:34 PM)
Page 2 : http://mw2.concord.org/public/part2/photosynthesis/page2.cml
1. Based on the model, which of the following must be true? (Check all that are true.)
(a) The red leaf absorbs red photons.
(b) The green leaf absorbs green photons.
(c) The red leaf absorbs photons of any color but red.
(d) The green leaf absorbs photons of any color but green.
My answer is (c) (d) (2:17:03 PM)
2. What will happen if we put a plant in a dark room and only shine green light on it? Explain your answer.
A green leaf can absorb photons of any color but green, the leaf will not absorb any photons of the green light, therefore the plant will die. (2:19:33 PM)
Page 3 : http://mw2.concord.org/public/part2/photosynthesis/page3.cml
1. Based on your observation of the above model, which molecule is responsible for absorbing light in the leaf?
(a) Molecule A.
(b) Molecule B.
(c) Molecule C.
(d) Cannot determine.
My answer is (c) (2:22:26 PM)
2. Click the "Whole Leaf" button and describe three different ways in which photons interact with the leaves.
1. The green photons are reflected back.
2. The other photons (except green) are absorbed.
3. Non-visible light photons are absorbed
4. Some photons pass through the leaves making them slightly transparent. (2:28:25 PM)
3. In the cell, chlorophyll binds to other molecules in a large complex. Based on the structure of chlorophyll's tail, with which of the following would chlorophyll associate? (Check all that apply).
(a) membrane lipids
(b) hydrophobic areas of proteins
(c) hydrophillic areas of proteins
(d) water
My answer is (a) (b) (2:31:00 PM)
4. Heme is a functional group similar to chlorophyll's head, but it has iron in place of magnesium. Heme is what makes blood look red. What colors of light does iron help heme absorb? Explain your answer. (Hint)
Heme must absorb all colors of light except red. That is why some apples look red becuase red photons are reflected back. Chlorophyll absorbs color colors other than green because green photons are reflected back (2:38:30 PM)
Page 4 : http://mw2.concord.org/public/part2/photosynthesis/page4.cml
1. How do additional pigments help chlorophyll to transfer energy for photosynthesis?
(a) Chlorophyll transfers electrons to them.
(b) They transfer photons to proteins.
(c) They absorb photons of other frequencies.
(d) They absorb electrons from proteins.
My answer is (c) (2:38:56 PM)
2. Compared to the other pigments, there is so much chlorophyll in leaves that they appear green. In the autumn, pigments start to break down. How can you explain the other colors in autumn leaves?
With a lack of sunlight in the fall (compared to summer) comes lack of chlorophyll. Without chlorophyll the other colored pigments can be seen in autumn leaves. The principle of light being reflected back is the same. (2:41:20 PM)
Page 5 : http://mw2.concord.org/public/part2/photosynthesis/page5.cml
1. Describe what you need to do in order to produce a blue pigment.
You need to prevent blue photons from being absorbed. The energy levels that represent blue photons being absorbed must be deleted to create a gap in the energy levels (2:55:16 PM)
2. Place the snapshot of the energy level diagram you have designed that produces a blue pigment.
(2:49:11 PM)
Page 6 : http://mw2.concord.org/public/part2/photosynthesis/page6.cml
1. What color of light is LEAST effective in causing photosynthesis? Why?
Green, because it is reflected back. (2:55:50 PM)
2. If a substance is blue, then what is true about the photons it absorbs?
(a) The frequencies of the photons are all in the blue zone.
(b) The frequencies of the photons are not in the blue zone.
(c) The photons are turned into blue by the material.
(d) None of the above.
My answer is (b) (2:55:26 PM)
3. Water tends to absorb more red photons than blue ones. Red algae are the known photosynthetic organisms that live deepest in the sea (as deep as 600 feet). Why do they have a red color when we observe them under sunlight?
Because they are reflecting the red light when they are in the sunlight. (2:59:01 PM)
4. Which of the following must be true about photon absorption and energy levels of pigments?
(a) The energy of an absorbed photon must be equal to the difference of energy between two energy levels.
(b) The higher the energy levels are, the higher the energy of the photons a pigment will absorb.
(c) The energy levels of a pigment become higher when a photon is absorbed.
My answer is (a) (2:56:06 PM)
5. Indian pipe plants (see the image on the left) contain no chlorophyll. What can you conclude about the ability of the Indian pipe plant to make its own food? Explain your answer.
Indian pipe plants must not make their own food, instead they must get food in some other way such as parasitism. Without chlorophyll, they cannot excite the electrons to go throught the process of photosynthesis. this make the Indian pipe plant more similar to an animal or fungus. (3:04:15 PM)
8.0
8.0
22true
8.0
8.0
22true
8.0
8.0
true255 0 0
8.0
8.0
true255 0 0
8.0
8.0
true255 0 0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
true17
http://mw2.concord.org/public/part2/photosynthesis/page1.cml
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
true17
http://mw2.concord.org/public/part2/photosynthesis/page2.cml
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
true17
http://mw2.concord.org/public/part2/photosynthesis/page3.cml
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
true17
http://mw2.concord.org/public/part2/photosynthesis/page4.cml
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
true17
http://mw2.concord.org/public/part2/photosynthesis/page5.cml
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
page5_20147614494.png
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
true17
http://mw2.concord.org/public/part2/photosynthesis/page6.cml
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
true13true
8.0
8.0
true13true
8.0
8.0
8128 128 128
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0