Number of Cells II I III Timo

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Examine the graph shown below of a liquid culture growth curve for S. pneumoniaegrowing in minimal broth containing both glucose and lactose in equal concentrations as a potential carbon source. Answer the following questions:

a) Name the growth phases labelled as I, II and III, explain the observed pattern of growth at each of these stages in the curve 

b) Where would the concentration of cAMP be low and why? 

c) In what phase would β-galactosidase be high and why? 

d) What kind of overall growth pattern does this curve illustrate? 

Number of Cells
II
I
III
Time
Transcribed Image Text:Number of Cells II I III Time
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