The phenomenon that takes place at a concentration of free actin at the midpoint between the critical concentrations of the barbed and pointed ends of an actin filament is called
a. assembly.
b. dynamic instability.
c. treadmilling.
d. disassembly.
e. walking.
Ans: c. treadmilling.
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The advantages of the amniotic egg include (select all that apply)
A. relatively long development times supported by a large yolk. B. the ability to resist desiccation in dry terrestrial habitats. C. improved protection from predators. D. improved ability to withstand wide temperature fluctuations. E. the ability to withstand freezing.
Describe the pathway of information in a neuron.
What will be an ideal response?
When carbon dioxide is low in the leaf, the Calvin cycle cannot proceed efficiently and the result is:
A. photorespiration B. shutting down photosynthesis C. cellular respiration D. light-independent reactions
Dental plaque is an example of
A) a pellicle. B) a biofilm. C) gingivitis. D) dentin. E) tooth enamel.