Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 8, Problem 14TYU
SYNTHESIZE YOUR KNOWLEDGE
“Watermelon snow” in Antarctica is caused by a species of photosynthetic green algae that thrives in subzero temperatures (Chlamydomonas nivalis). These algae are also found in high-altitude year-round snowfields. In both locations, UV light levels tend to be high. Based on what you learned in this chapter, propose an explanation for why this photosynthetic alga appears reddish-pink.
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“Watermelon snow” in Antarctica is caused by a certain species of photosynthetic green algae that thrives in subzero temperatures (Chlamydomonas nivalis). These algae are also found in high-altitude, year-round snowfields. In both locations, Uv light levels tend to be high. Propose an explanation for why this alga appears reddish-pink.
“Watermelon snow” in Antarctica is caused by a certain species of photosynthetic green algae that thrives in subzero temperatures (Chlamydomonas nivalis). These algae are also found in high-altitude, year-round snowfields. In both locations, Uv light levels tend to be high. Propose an explanation for why this alga appears reddish-pink.
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A scientist claims that the Presence of aquaporins is in chloroplast membrane support that Endosymbiotic theory?
Chapter 8 Solutions
Campbell Biology in Focus
Ch. 8.1 - How do the CO2 molecules used in photosynthesis...Ch. 8.1 - How did the use of an oxygen isotope help...Ch. 8.1 - WHAT IF? The Calvin cycle requires ATP and NADPH,...Ch. 8.2 - What color of light is least effective in driving...Ch. 8.2 - In the light reactions, what is the initial...Ch. 8.2 - Prob. 3CCCh. 8.3 - MAKE CONNECTIONS How are the large numbers of ATP...Ch. 8.3 - WHAT IF? Explain why a poison that inhibits an...Ch. 8.3 - Prob. 3CCCh. 8.4 - Prob. 1CC
Ch. 8 - The light reactions of photosynthesis supply the...Ch. 8 - Which of the following sequences correctly...Ch. 8 - How is photosynthesis similar in C4, plants and...Ch. 8 - Which of the following statements is a correct...Ch. 8 - Which of the following does not occur during the...Ch. 8 - In mechanism, photophosphorylation is most similar...Ch. 8 - Prob. 7TYUCh. 8 - To synthesize one glucose molecule, the Calvin...Ch. 8 - SCIENCE, TECHNOLOGY, AND SOCIETY Scientific...Ch. 8 - DRAW IT The following diagram represents an...Ch. 8 - Prob. 11TYUCh. 8 - Prob. 12TYUCh. 8 - FOCUS ON ENERGY AND MATIER Life is solar powered....Ch. 8 - SYNTHESIZE YOUR KNOWLEDGE Watermelon snow in...
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- Compare photo litho autotrophy with chemo-organo heterotrophy. Sun light is the ultimate source of energy and all living organisms obtain their energy directly or indirectly from the sun. However in deep-sea vents (where there is no sun light) life has originated and the many groups of microorganisms are flourishing in such environment. How? Explain your reasoningarrow_forwardAlthough they are not photosynthetic, apicomplexan parasites such as Plasmodium have modified plastids. Describe a current hypothesis that explains this observationarrow_forwardThe main product of fossil fuel combustion is CO2 , and thisis the source of the increase in atmospheric CO2 concentration. Scientistshave proposed strategically situating containers of these algae near industrialplants or near highly congested city streets. Considering the process ofphotosynthesis, how does this arrangement make sense?arrow_forward
- "Watermelon snow" in Antarctica is caused by a species of photosynthetic green algae that thrives in subzero temperatures (Chlamydomonas nivalis). These algae are also found in high altitude in year-round snowfields. In both locations, UV light levels tend to be high. The reddish-pink color of these algae is due to the presence of carotenoid pigments, which absorb blue light while reflecting red light. Those pigments protect the chloroplast from ultraviolet radiation, as well as absorbing heat, which provides the algae with liquid water as the snow melts around it. This molecular variation in plants illustrates a relative fitness because the molecular adaptations in chlorophyll pigments have passed to the next generation b innate variability because plants have evolved molecular differences to an environmental stimuli c unselective adaptation because plants have evolved molecular differences to adapt to different wavelengths of light d inclusive…arrow_forwardChemolithrophs near hydrothermal vents support a variety of other life forms there. Explain now their role is analogous to that of photosynthetic organisms in the terrestrial environment.arrow_forwardWhich of the following oxygenic phototrophs are believed to have generate the majority of oxygen gas in Earth’s atmosphere? a. Chlorobium b. Chloroflexus c. Clostridium d. Cyanobacteria e. purple bacteriaarrow_forward
- A scientist claims that the presence of aquaporins in chloroplast membranes supports the endosymbiotic theory. Support the claim with evidence from biological concepts.arrow_forwardConsider plants that live in a forest's top, middle, or ground layer, as well as algae that live near the ocean's surface or in deep water. Would you expect the same photosynthetic pigments to be present in these different environments in the same species? Why do you think that is the case? What method would you use to test your hypothesis?arrow_forward______________ require ______________ and ______________, to perform ______________. Question 1 options: Photoautotrophs, water (H2O), carbon dioxide (CO2), photosynthesis Cordatatrophs, potassium superoxide (KO2), water (H2O), chemosynthesis Hemitrophs, iron oxide (Fe2O3), water (H2O), chemosynthesis None of the other answers are correct. Herterotrophs, carbon dioxide (CO2), water (H2O), photosynthesis Simiautotrophs, nitrous oxide (N2O), hydrogen peroxide (H2O2), nucleosynthesisarrow_forward
- What is the difference between the way C3 and C4 plants fix CO2 from the atmosphere? Question 4 options: C3 plants fix CO2 and conduct the light-dependent reactions in the same cells; C4 plants conduct these activities in different cells. C4 plants fix CO2 and conduct the light-dependent reactions in the same cells; C3 plants conduct these activities in different cells. C3 plants fix CO2 and conduct the light-dependent reactions at the same time of day; C4 plants conduct these activities at different times of the day. C4 plants fix CO2 and conduct the light-dependent reactions at the same time of day; C3 plants conduct these activities at different times of the day.arrow_forwardDinoflagellates are unicellular, marine protists. Dinoflagellates are bioluminescent, but only at night. During the day, they carry out photosynthesis similar to other autotrophs. At night, however, they bioluminesce every time they are disturbed. They are often seen in the wakes of ships at night. While the reason for this bioluminescence is not fully understood, many scientists concur that it is a form of self-defense. If small fish begin to feed upon the protists, the protists will begin to bioluminesce. These flashes of light in the dark water can alert larger fish and draw them towards the small fish, upon which they prey. By making the small fish vulnerable, the dinoflagellates are able to protect themselves. Based on the information above, a researcher decides to design an experiment in which she is testing how long it takes for dinoflagellates to recover after different amounts of disturbance. She maintains 10 containers of dinoflagellates with similar temperature, salinity and…arrow_forwardDinoflagellates are unicellular, marine protists. Dinoflagellates are bioluminescent, but only at night. During the day, they carry out photosynthesis similar to other autotrophs. At night, however, they bioluminesce every time they are disturbed. They are often seen in the wakes of ships at night. While the reason for this bioluminescence is not fully understood, many scientists concur that it is a form of self-defense. If small fish begin to feed upon the protists, the protists will begin to bioluminesce. These flashes of light in the dark water can alert larger fish and draw them towards the small fish, upon which they prey. By making the small fish vulnerable, the dinoflagellates are able to protect themselves. Based on the information above, a researcher decides to design an experiment in which she is testing how long it takes for dinoflagellates to recover after different amounts of disturbance. She maintains 10 containers of dinoflagellates with similar temperature, salinity and…arrow_forward
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