Compare the structural and functional differences between chlorosomes and thylakoid membranes. Do you think this is an example of convergent evolution—two structures evolving separately to fulfill the same function, or divergent evolution—two structures that arose from a single ancestor but adapted to meet the particular needs of the organism that bears them? What other data would you need (apart from structure and function) to answer this question

Compare the structural and functional differences between chlorosomes and thylakoid membranes. Do you think this is an example of convergent evolution—two structures evolving separately to fulfill the same function, or divergent evolution—two structures that arose from a single ancestor but adapted to meet the particular needs of the organism that bears them? What other data would you need (apart from structure and function) to answer this question

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter5: Photosynthesis

Section: Chapter Questions

Problem 3RQ: Which statement about thylakoids in eukaryotes is not correct? a. Thylakoids are assembled into...

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Now imagine that you are pretty wimpy ancestral eukaryotic cell, incapable of either cellular respiration or photosynthesis. Writing in the first person (from the "" perspective), please describe the evolutionary process by which you and your offspring ultimately evolved into the first amazing plant cell, which was capable of BOTH cellular respiration and photosynthesis. In your response, be sure to demonstrate your understanding of the following: the main difference between prokaryotic and eukaryotic cells, the major cellular organelles, natural selection, the basic structure and function of mitochondria and chloroplasts, as well as the types of macromolecules that make up these organelles.
The chlorophyte (green algae) genera Ulva and Caulerpa both have macroscopic leaf-like and stem-like structures, but only Ulva species are considered truly multicellular. Explain why.
Consider 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?
Which of the following statements incorrectly describes the structure of a chloroplast? A chloroplast has both an outer membrane and an inner membrane, often separated by a narrow intermembrane space. The inner membrane of the chloroplast encloses the stoma, a dense fluid filled with enzymes needed for photosynthesis. A chloroplast contains thylakoids, which are flat, saclike structures suspended in the stroma. Thylakoids of a chloroplast are arranged into stacks called grana.
The term "dominant generation" refers to: two diploid life stages alternating with each other, one of which is long-lived and cabaple of photosynthesis one multicellular life stage alternating with one unicellular life stage that is large and photosynthetic two multicellular life stages alternating with each other one multicellular stage that is long-lived and capable of photosynthesis
Which of the following is NOT true about the structure of chloroplasts? A) The thlakoid membranes are continuous with the intermembrane space B) The network of thylakoids within a chloroplast are one continuous space C)Thylakoids of the chloroplast developed due to the invagination of the inner plastid membrane D) All of these are true about chloroplast structure. E) Chloroplasts are considerably larger than mitochondria
It has been suggested that chloroplasts, like mitochondria, evolved from independent living organisms. What features of the chloroplast suggest that this is true?
why is chloroplast called a kitchen of the cell? (a detailed and longer explanation is needed)
A scientist claims that the presence of aquaporins in chloroplast membranes supports the endosymbiotic theory. Support the claim with evidence from biological concepts.
What are grana? convolutions of the inner chloroplast membrane pigments found in chloroplasts thick fluids inside chloroplasts stacks of membranous sacs
There are several lines of evidence that suggest that chloroplasts and mitochondria were once independent organisms. Explain in your own words what that evidence is.
Put the items in the correct order by increasing size. Below is a sequence of events. Place them in the order they should occur, number 1 being the first item. Select the step number from the drop down next to each item. Items to order: 1. plant cell 2. chlorophyll molecule 3. chloroplast 4. thylakoid membrane