Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 10, Problem 16PIAT
Cultures of microalgae are often grown in large pools of water or clear tanks, like those shown in the photograph. Consider such a three-dimensional habitat, then speculate as to why reducing the size of the antenna complexes would benefit the entire culture when grown in full sunlight.
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Chapter 10 Solutions
Biological Science (6th Edition)
Ch. 10 - 1. In antenna complexes, how is energy transferred...Ch. 10 - Why is chlorophyll green? a. It absorbs all...Ch. 10 - 3. What do the light-capturing reactions of...Ch. 10 - At what point in photosynthesis is the...Ch. 10 - 5. Why is the chlorophyll in chloroplasts less...Ch. 10 - Describe the three phases of the Calvin cycle and...Ch. 10 - Prob. 7TYUCh. 10 - 8. CAUTION Which process in plants generates the...Ch. 10 - Predict how the following conditions would affect...Ch. 10 - Prob. 10TYPSS
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- Consider an algal cell in the tubular section of the photobioreactor. Assume the algal cell is a perfect sphere of 3 μm diameter and is travelling at 100 cm/s in the tubular region in the same direction of fluid flow. Culture media, which has similar physical properties to that of water (at 25 °C), is pumped through the bioreactor at 200 cm/s. Determine whether flow separation would happen downstream of the algal cell? Justify your answer.arrow_forwardSome exconjugants did not grow on minimal medium. On what medium would they grow?arrow_forwardSuppose that you were tasked with 4 cultures of a specific Bacteria Species in Luria Broth medium: (1) culture A – cells are in lag phase; (2) culture B – cell in log phase; (3) culture C – cells in stationary phase; and culture D – cells in decline phase. Imagine that you observe the growth rates of each culture in a fresh sterilized LB medium. Now, plot the outcome growth curves of cultures A, B, C and D in a single graph.arrow_forward
- It may seem contradictory that lyophilization can be used to preservefoods yet also be used to keep cultures of microbes viable. Explainhow these applications can be reconciled.arrow_forwardAfter inoculating and incubating an agar slant from a pure broth culture of a bacterial species such as E. coli, which of the following would indicate an unsuccessful aseptic transfer? (Choose ALL that apply) a - There is fungal growth in the original broth culture tube. b- There is too much growth on the agar slant. c- There are colonies of similar morphology on the slant. d - There are red, yellow, and white colonies on the slant. e - There is no growth on the slant.arrow_forwardOn agar plate does each discrete colony represent the growth of one cell? Explain your answer. Why can a single colony on a plate be used to start a pure culture?arrow_forward
- Why is it important to use a sterilized loop between streaks when preparing a streakplate? Observation of a streakplate culture shows more growth in Quadrant 4 than in Quadrant 3. Account for this observation. Describe the way in which you can isolate an individual colony from a spreadplate or a streakplate that holds multiple colonies. Outline the differences between a streak plate and a spread plate.arrow_forwardThe generation time of a bacterial culture that produces two generations per hour is: a. Equal to that produces three generations per hour bLesser than that produces five generations per hour than that produces three generations per hour Lesser than that produces four generations per hour Greater than that produces three generations per hourarrow_forwardIn a biological production process, bacteria with spore-forming ability are immobilized on a support surface. Once a batch of production is done, these cells along with their support material are separated from the medium, and then sterilization is performed in a furnace for safe disposal of material into the environment. An important issue here is to ensure ALL bacteria, including any spores that may form and those that are located at the center of the spherical support material, are killed with heat. For this purpose, the temperature at the center of the spherical support material must reach the designated killing temperature. The support material is a sphere with 3 cm diameter and a heat capacity of 4.0 kJ/kg*K, a density of 800 kg/m³, a thermal conductivity of 0.7 W/m*K. The heat transfer coefficient of the surrounding air is 14 W/m2*K. If the initial temperature inside the furnace prior to the start of sterilization is 15 °C, how long should the procedure last to obtain sterile…arrow_forward
- Slime moulds are excellent material for the study of protoplasm.Comment.arrow_forwardCan this medium be used for cultivating algae? why or why not?arrow_forwardCalculate the growth rate and generation time of a culture that increases in the exponential phase from 5 x 102 to 1 x 108 cells in 12 hours.arrow_forward
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Microbial Nutrition and Growth; Author: Scientist Cindy;https://www.youtube.com/watch?v=rK3UkyWjkl8;License: Standard YouTube License, CC-BY