3. The following is an experiment with isolated thylakoids. The thylakoids were first made acidic by soaking them in a solution at pH 4. After the thylakoid space reached pH 4, the thylakoids were transferred to a basic solution at pH 8. The thylakoids then made ATP in the dark. Draw an enlargement of part of the thylakoid membrane in the beaker with the solution at pH 8. Dray ATP synthase. Label the areas of high H+ concentration and low H+ concentration. Show the direction protons flow through the enzyme, and show the reaction where ATP is synthesized. Would ATP end up in the thylakoid or outside of it? Explain why thylakoids in the experiment were able to make ATP in the dark. pH 7 pH 4 BE pH 4 pH 8 3 ATP

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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100%
3 / 4
90% + 1
pH 4
8. The following is an experiment with isolated thylakoids. The thylakoids were first made
acidic by soaking them in a solution at pH 4. After the thylakoid space reached pH 4, the
thylakoids were transferred to a basic solution at pH 8. The thylakoids then made ATP in
the dark. Draw an enlargement of part of the thylakoid membrane in the beaker with
the solution at pH 8. Dra ATP synthase. Label the areas of high H+ concentration and
low H+ concentration. Show the direction protons flow through the enzyme, and show
the reaction where ATP is synthesized. Would ATP end up in the thylakoid or outside of
it? Explain why thylakoids in the experiment were able to make ATP in the dark.
88
pH 7
SE
pH 4
[
A
88
→
tv
pH 8
3
ATP
A
Transcribed Image Text:3 / 4 90% + 1 pH 4 8. The following is an experiment with isolated thylakoids. The thylakoids were first made acidic by soaking them in a solution at pH 4. After the thylakoid space reached pH 4, the thylakoids were transferred to a basic solution at pH 8. The thylakoids then made ATP in the dark. Draw an enlargement of part of the thylakoid membrane in the beaker with the solution at pH 8. Dra ATP synthase. Label the areas of high H+ concentration and low H+ concentration. Show the direction protons flow through the enzyme, and show the reaction where ATP is synthesized. Would ATP end up in the thylakoid or outside of it? Explain why thylakoids in the experiment were able to make ATP in the dark. 88 pH 7 SE pH 4 [ A 88 → tv pH 8 3 ATP A
Cellular Respiration and Photosynthesis:
9. Suppose that one day a pika (living in your yard) eats a candy bar accidentally tainted with
radioactive carbon. You are surprised to discover that a bird in your backyard has
radioactivity in its body one week later. How did this occur?
10. Twelve radish seeds were placed in each of four different dishes and treated under various
experimental conditions: Dish 1 received neither light nor water. Dish 2 received both. Dish
3 received water, but no light. Dish 4 received light but no water. After one week the dishes
appeared as follows. The material in each dish was then dried and weighed. What were the
relative weights? Why?
1
?
2
3
4
Transcribed Image Text:Cellular Respiration and Photosynthesis: 9. Suppose that one day a pika (living in your yard) eats a candy bar accidentally tainted with radioactive carbon. You are surprised to discover that a bird in your backyard has radioactivity in its body one week later. How did this occur? 10. Twelve radish seeds were placed in each of four different dishes and treated under various experimental conditions: Dish 1 received neither light nor water. Dish 2 received both. Dish 3 received water, but no light. Dish 4 received light but no water. After one week the dishes appeared as follows. The material in each dish was then dried and weighed. What were the relative weights? Why? 1 ? 2 3 4
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