Salt marsh communities predominate in temperate and subarctic areas
Indicate whether the statement is true or false
T
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All of the following are actin-dependent nonmuscle motilities except
A) extension of the ER. B) cleavage furrow constriction in cytokinesis. C) chemotaxis. D) cyclosis or cytoplasmic streaming. E) amoeboid movement.
Populations that experience significant contest competition:a
show small changes in population size over time. b. show great changes in population size over time. c. are particularly susceptible to extinction. d. show little intraspecific competition. e. are characteristic of environments with abundant resources.
During elongation, a charged tRNA first enters the ribosomal ________ site and then moves into the ________ site
A) A; E B) P; A C) P; E D) A; P E) E; A
What is the main component of an animal cell membrane?
A. phospholipids B. polynucleotides C. aquaporins D. glycolipids E. cholesterol