Which of the following is false about lamellipodia?
A) Their formation is stimulated by activation of Rac.
B) They may have associated filopodia.
C) They contain bundles of microtubules that push the plasma membrane forward.
D) They extend at the leading edge of crawling cells.
E) They contain branched networks of actin filaments.
Answer: C
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Which of the following can describe the plasma membrane?
a. semi-permeable b. selectively permeable c. selectively impermeable d. semi-impermeable
nitrogen
What will be an ideal response?
If you are exposed to ancient Peruvian art for the first time and experience some difficulty trying to figure out the meaning and quality of the art, you would be forced to simply examine the specific elements of the art since you do not have any background cultural information to use as a context in understanding the art. This would be an example of
a. bottom-up processing.
b. top-down processing.
c. left-right processing.
d. right-left processing
The human population on Earth is expected to reach 9.7 billion people by
A) 2015. B) 2050. C) 2093. D) 3150.