Biology: How Life Works
3rd Edition
ISBN: 9781319017637
Author: James Morris, Daniel Hartl, Andrew Knoll, Melissa Michael, Robert Lue, Andrew Berry, Andrew Biewener, Brian Farrell, N. Michele Holbrook
Publisher: Macmillan Higher Education
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Chapter 24.5, Problem 11SAQ
Summary Introduction
The size and shape of microorganisms are immediately revealed upon examination using a microscope. Among Archaea, several different morphologies are found. Archaeal cells vary in size ranging from 0.2 µm to >700 µm in diameter. In general, the size of rod-shaped cells ranges from 0.5 – 4 µm in width and <15 µm in length. Archaeal cells are prokaryotes and they do not possess a membrane-bound nucleus. Their genes are arranged in the form of a single circular chromosome.
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