Prob_set_1ans - Problem Set #1 Bio 1A Due week of January...

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Problem Set #1 Bio 1A Due week of January 28, 2008 1) What is the defining difference between Archea and Eubacteria? Archea are extremeophiles—they grow at high temperatures and harsh conditions. They have proteins that are homologous to eukaryotic protein like histones and some of their genes have introns like eukaryotic genes. 2) Which pairs of objects are different in size by more than 1000-fold: a) protein and a ribosome b) human and an animal cell c) virus and the smallest bacteria d) mitochondria and a typical bacterium e) liver cell and a liver 3) Where is DNA found in eukaryotic cells? In prokaryotic cells? Nucleus and mitochondria in eukaryotic cells; in cytoplasm in prokaryotes. 4) What is a flagellum used for? motility 5) We usually speak of bacteria as single-celled microorganisms. Can you describe a situation where it might be more appropriate to think of bacteria as being more similar to a multi-cellular microbe? When they are in biofilms—communities of microbes living and interacting with one
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This note was uploaded on 04/02/2008 for the course BIO 1A taught by Professor Schlissel during the Spring '08 term at University of California, Berkeley.

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Prob_set_1ans - Problem Set #1 Bio 1A Due week of January...

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