Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 34, Problem 6TYU
Summary Introduction
Introduction: Plants are non-motile living beings that are capable of producing their own food by utilizing the sunlight and carbon dioxide. They form the kingdom Plantae that includes all the plants such as trees, shrubs,
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28. During respiration, most ATP is formed as a direct result of the net movement of
(A) potassium against a concentration gradient
(B) protons down a concentration gradient
(C) electrons against a concentration gradient
(D) electrons through a channel
(E) sodium ions into the cell
29. Which of the following processes is carried out more efficiently by a C. plant than by a C3
plant?
(A) Light absorption
(B) Chemiosmotic coupling
(D) Photolysis
(D) Fixation of CO,
(E) Transport of sugars
8. Most plants open their stomata during the day when light is available for photosynthesis to
favor CO2 diffusion and then close them at night to conserve water. However, plants such as
the saguaro cactus (pictured) actually open their stomata at night to fix carbon and undergo
alternative photosynthetic reactions during the day instead of capturing sunlight for light-
dependent reactions. This is an adaptation to conserve water in desert climates. With this in
mind...
a. Do you think the air and soil surrounding the cactus is typically drier or wetter than the plant?
b. How would soil moisture impact water transport in the plant?
c. Why do you think cacti lack large green leaves found in plants that undergo more traditional
forms of photosynthesis?
You continuously monitor the photosynthetic oxygen production from the leaf of a plant illuminated by white light. How and why would oxygen production change if you placed filters in front of the light source that transmit (a) only red, (b) only infrared, and (c) only green light onto the leaf?
Chapter 34 Solutions
Biology (MindTap Course List)
Ch. 34.1 - Prob. 1LOCh. 34.1 - Prob. 2LOCh. 34.1 - Prob. 3LOCh. 34.1 - Prob. 4LOCh. 34.1 - How are leaves adapted to conserve water?Ch. 34.1 - Prob. 2CCh. 34.1 - What are the two types of vascular tissue in a...Ch. 34.1 - How is the leaf organized to deliver the raw...Ch. 34.2 - Prob. 5LOCh. 34.2 - Prob. 6LO
Ch. 34.2 - How does blue light trigger stomatal opening?Ch. 34.2 - Prob. 2CCh. 34.3 - Discuss transpiration and its effects on plants.Ch. 34.3 - Prob. 8LOCh. 34.3 - Prob. 1CCh. 34.3 - How do environmental factors (sunlight,...Ch. 34.3 - Prob. 3CCh. 34.3 - Prob. 4CCh. 34.4 - Define leaf abscission, explain why it occurs, and...Ch. 34.4 - Why do many woody plants living in temperate zones...Ch. 34.4 - Prob. 2CCh. 34.4 - Prob. 3CCh. 34.5 - Prob. 10LOCh. 34.5 - Prob. 1CCh. 34.5 - Prob. 2CCh. 34.5 - What are some of the specialized features of the...Ch. 34 - Prob. 1TYUCh. 34 - Prob. 2TYUCh. 34 - Prob. 3TYUCh. 34 - Prob. 4TYUCh. 34 - Which of the following is not an adaptation of...Ch. 34 - Prob. 6TYUCh. 34 - At sunrise, the accumulation in the guard cells of...Ch. 34 - Prob. 8TYUCh. 34 - Prob. 9TYUCh. 34 - Modified leaves that enable a stem to climb are...Ch. 34 - There is a trade-off between photosynthesis and...Ch. 34 - Suppose that you are asked to observe a micrograph...Ch. 34 - Prob. 13TYUCh. 34 - Prob. 14TYUCh. 34 - What might be some of the advantages of a plant...Ch. 34 - Prob. 16TYUCh. 34 - Prob. 17TYU
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- 1. Look at the molecular formula for plant tissue. Where does the carbon come from? 2. Where does the hydrogen in C6H12O6 come from? 3. When radioactive isotopes of oxygen atoms are put into CO2 molecules and the plant is allowed to photosynthesize, only new plant tissue (C6H12O6) is radioactive and the oxygen gas given off is not radioactive. Draw a dotted line in the photosynthesis equation to show where the oxygen atoms in CO2 go. 4. Draw a dotted line in the equation to show where the oxygen atoms in H20 go.arrow_forwardWhere is chlorophyll located in the chloroplast? (a) thylakoid membranes (b) stroma (c) matrix (d) thylakoid lumen (e) between the inner and outer membranesarrow_forwardIn oxygenic photophosphorylation (a) photosystem II uses the photopigment bacteriochlorophyll (b) Oxygen is used as an electron donor (c) ATP is produced by means of substrate level phosphorylation (d) photosystem I reduces NADP (e) none of the abovearrow_forward
- Show all working explaining detailly each step. Answer should be type written with a computer keyboard!arrow_forwardWhy do plant leaves look green to us? 1. Because pigments in chloroplasts absorb green light, while red and blue light is reflected 2. Because pigments absorb red and blue light, while the green light is reflected 3. Because pigments absorb red and blue light and green light is emitted from their excited states 4. Because pigments in chloroplasts absorb green light, while red and blue light passes through the leafarrow_forwardWhen plant cells are in a hypotonic medium, they (a) undergo plasmolysis (b) build up turgor pressure (c) wilt (d) decrease pinocytosis (e) lose water to the environmentarrow_forward
- Can someone help me understand how to calculate the rate of photosynthesis?arrow_forwardWhich best describes cyclic photophosphorylation? (a) it uses two photosystems (b) it produces water as a waste product (c) it produces oxygen as a waste product (d) it utilizes a single photosystem (e) it uses substrate level phosphorylation to produce ATParrow_forwardDiscuss Concepts Baobab trees (Adansonia spp.) store water in their trunks (stems) and, although the trees have leaves, considerable photosynthesis also occurs in the trunks. Cacti too have water-storing, photosynthetic stems. In terms of evolutionary adaptation, what does this information suggest about cacti and baobabs?arrow_forward
- Discuss Concepts Concerns about global climate change and the greenhouse effect center on rising levels of greenhouse gases, including atmospheric carbon dioxide. Plants use CO for 2 photosynthesis, and laboratory studies suggest that increasedCO2 levels could cause a rise in photosynthetic activity. However, as one environmentalist noted, What plants do in environmental chambers may not happen in nature, where there are many other interacting variables. Strictly from the standpoint of physiological effects, what are some possible ramifications of a rapid doubling of atmospheric CO2 on plants in temperate environments? In arid environments?arrow_forwardTest Your Understanding 4.When plant cells are in a hypotonic medium, they (a) undergo plasmolysis (b) build up turgor pressure (c) wilt (d) decrease pinocytosis (e) lose water to the environmentarrow_forwardFor photosynthesis lab in biology 1) This lab uses spinach leaves. Name another plant that would make an interesting comparison to spinach. Explain why you think this leaf would provide an interesting comparison 2) The lights used in this experiment are 60W. What would you predict the effect of having stronger or weaker wattage bulbs would be on your results? Explain. 3)This lab uses 0.2% sodium bicarbonate. What would you predict the effect of raising or lowering the percentage would be on your results? Explain. 4)What are TWO other things that might be manipulated in an experiment using this same protocol other than the type of leaf, percent sodium bicarbonate, and wattage of light bulb? 5) What key thing do you have to look for on the graph to know for certain that your treatment has caused a significant effect?arrow_forward
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