Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 11, Problem 1Q
In the late 1800s, T. W. Engelmann illuminated algae using a prism to expose the algae to various wavelengths of light in the presence of oxygen-seeking bacteria. In which regions of the spectrum do you think the bacteria were most numerous?
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Chapter 11 Solutions
Becker's World of the Cell (9th Edition)
Ch. 11 - Both mitochondria and chloroplasts are...Ch. 11 - In the late 1800s, T. W. Engelmann illuminated...Ch. 11 - How do the type and arrangement of the various...Ch. 11 - An essential structural feature in both...Ch. 11 - Prob. 11.4CCCh. 11 - Explain how the Calvin cycle fixes three CO2...Ch. 11 - What are the major regulatory points in the Calvin...Ch. 11 - Although the typical chemical equation for...Ch. 11 - Prob. 11.8CCCh. 11 - True or False Indicate whether each of the...
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- IDENTIFY: A phycobilin pigment in the red algae efficient in harvesting specific wavelength of light at great depths.arrow_forwardWhat is resolution and how is it improved? With which objective is it permissible to use the course adjustment knob? Why is it necessary to use the fine adjustment knob with higher magnification? Many of the plankton images were taken using the 40x objective on a compound microscope. What is the total magnification? What is the relationship between Cyanobacteria and the chloroplast of phytoplankton (algae)?arrow_forwardIn a population of cyanobacteria (Chlorogloeopsis fritschii) in a hot spring in Iceland, some of the bacteria can produce chlorophyll f, while some C. fritschii produce only other types of chlorophylls. Chlorophyll f absorbs light outside of the visible light spectrum, namely near infrared light, allowing the bacteria to absorb light that has not been absorbed or reflected by the water or other organisms. The ability to produce chlorophyll f is heritable, and the bacteria with chlorophyll f can live in low-light environments, such as underneath other organisms, or near the bottom of the light-penetrating zone of the spring. What is the adaptation in this population of C. fritschii living in low-light environments? (Choose one.) a) the ability to produce chlorophyll f b) the ability to produce any type of chlorophyll c) the ability to tolerate the high temperatures of the hot spring d) the ability to survive and reproducearrow_forward
- What type of bioluminscence produces 1000 photons of light per second in a normal situation without predators? What are some other types of bioluminescent bactirium and how much light do they produce in a normal situation? How many photons are emited by luciferin and luciferase in a normal situation? Amount of light emited per amount of bacterium.arrow_forwardIn the early 1930s, G. F. Gause carried out a series of experiments using two species of ciliated protists (Paramecium), which are single-celled eukaryotic protozoans. The protists were cultured together and separately, with the bacteria being the single food source. The results are shown in the figure below. (a) Based on figure, identify and explain the interaction that is taking place between P. caudatum and P. aurelia. (b) Clam shrimp, a natural predator to P. caudatum, is introduced to the culture containing both P. caudatum and P. aurelia after 24 days. Predict the impact that the clam shrimp will have on the culture and the populations. Justify your prediction.arrow_forwardDifferent bacteria have evolved many different light-absorbing pigments. Why is this advantageous to bacteria in the environment (as opposed to if all bacteria used the same pigment)?arrow_forward
- 1:30 Question 18 Mention one method by which wheat rust can be controlled. Use the editor to format your answer Question 19 .. is a protistan that can be autotrophic or heterotrophic A) Giardia B Euglena C) Plasmodium D Amoeba To which Supergroups the following groups of organisms belong? 1. Brown algae 2. Euglenids 3. Amoeboids 4. Fungi Use the editor to format your answer Question 21 Alternation of generation life cycle includes: A) two meiosis division and two mitosis B) three mitosis division and one meiosis c) one mitosis division and one meiosis D) two meiosis division and one mitosis Question 22arrow_forwardWhich of the following is FALSE concerning reasons why bacteria have multiple different types of pigments, such as carotenoids and chlorophylls? Group of answer choices To maximize the amount of light energy harvested. Can help protect from harmful photodynamic reactions To provide a wide range of carbon sources Pigments have narrow ranges of wavelengths they can absorbarrow_forwardA scientist claims that the Presence of aquaporins is in chloroplast membrane support that Endosymbiotic theory?arrow_forward
- Which of the following statements is correct for bothblue-green algae and bacteria ?(a) Both show anaerobic respiration.(b) Both have chlorophyll pigment.(c) Both are devoid of true nucleus.(d) None of the above Please try to break the solutions into as many steps as practically possible and the steps should come one by one and they should be short and crisp and plagiarism-free.arrow_forwardA filamentous organism has been isolated from decomposing organic matter. This organism has a cell wall but no chloroplasts. How would you classify this organism?arrow_forwardConsidering what you know about molds and yeasts, why do you think that we do not use the same nutrient agar used for bacteria to grow yeasts and moldsarrow_forward
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Prokaryotic vs. Eukaryotic Cells (Updated); Author: Amoeba Sisters;https://www.youtube.com/watch?v=Pxujitlv8wc;License: Standard youtube license