Biology 1002B Lecture Notes - Lecture 10: Oxidative Phosphorylation, Cell Membrane, Electron Acceptor

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carolinesnotes

19 Oct 2017

School

Western University

Department

Biology

Course

Biology 1002B

Professor

Beth Mac Dougall- Shackleton

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With respect to the evolution of eukaryotic cells. When it comes to cellular respiration and photosynthesis there is nothing really unique about the eukaryotes, so aerobic respiration, oxidative phosphorylation occurs in bacteria and. Ox/phos (complexes are found on plasma membrane in bacteria blue rectangles in. Area is related to the radius of the cell squared. Bacteria and archaea have smaller genomes (chlamydomonas has a much. Sometimes up to 100000 fold higher genome size (on average about 500: 100x larger in eukaryotes than prokaryotes. This suggests that (similar to the morphology constraint) there is constraint in genome size, cell size, complexity (all constrained in bacteria) something is limiting their ability in those three areas: complexity, cell size and genome size. Bacterium has a high surface area to volume ratio (sa/v) As anything gets larger, that sa/v ratio drops (because sa increases radius squared, volume radius cubed) Golf ball high surface area to volume, basketball, low surface area to volume.

Related Questions

17. What is citizen science? a) Science projects in which scientists study citizen b) Science project in which citizens are trained to become scientists in the future c) Science projects in which the public participates by collecting data, analyzing data, or participating as subjects d) Science projects in which scientists study the nature of being a good citizen

18. When considering the evolutionary tree of life and the three domains of life, which statement best describes what likely happened over the course of millions of years of evolution? Choose one:

A. Bacterial and eukaryotic cells are more closely related to each other than to archaeans, as evidenced by the fact that bacteria and eukaryotes do not inhabit the most extreme environments.
B. Although their cell structures are very different, archaean and eukaryotic cells are more closely related to each other than to bacteria, as evidenced by the fact that Bacteria was the first domain to split from the shared ancestor of Archaea and Eukarya.

C. Bacteria and archaeans are more closely related to each other than to eukaryotes, as evidenced by their cell structures. Bacteria and archaeans are prokaryotic, while all eukaryotic cells contain mitochondria and other membrane-bound organelles.
D. The three domains of life are equally divergent from one another, so no two domains are more closely related to each other. This is supported by the evolutionary tree of life because three branches extend from one node millions of years ago.

Biology 1002B Lecture Notes - Lecture 10: Oxidative Phosphorylation, Cell Membrane, Electron Acceptor

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