what processes are most likely occurring during lag phase, growth phase (i.e., nucleation, elongation) • Describe nucleation

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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what processes are most likely
occurring during lag phase, growth
phase (i.e., nucleation, elongation)
• Describe nucleation

 

100
% actin subunits in filaments
nucleation
(lag phase)
actin
subunits
elongation
(growth phase)
concentration of
monomers at
steady state = Cc.
oligomers
steady state
(equilibrium phase)
Time
actin filament
with subunits
coming on and off
growing
actin filament
Transcribed Image Text:100 % actin subunits in filaments nucleation (lag phase) actin subunits elongation (growth phase) concentration of monomers at steady state = Cc. oligomers steady state (equilibrium phase) Time actin filament with subunits coming on and off growing actin filament
Expert Solution
Step 1
  • Microfilaments are composed mainly of actin protein filaments and are essential to the eukaryotic cytoskeleton.
  • They are Ultramicroscopic, long, thin, cylindrical rods of about 7 nm diameter protein filaments.
  • Actin has a contractile association with the myosin protein and helps in muscular contraction and cell motility.
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