Which of the cytoskeletal filaments is associated with supporting the movement of materials inside the cell?
A. microtubules
B. microfilaments
C. intermediate filaments
D. Answers a and b are correct.
D
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When a cell releases chemicals that act as signals into the extracellular fluid to affect cells, this is an
example of
a. autocrine regulation. b. endocrine regulation. c. paracrine regulation. d. systemic regulation. e. exocrine regulation.
Overhunting of the northern elephant seals left only twenty individuals, from which the modern population arose. As a
result, each animal is most likely ____ for most alleles.
a. recessive b. dominant c. homozygous d. heterozygous e. co-dominant
What is the greatest benefit for carnivores who hunt cooperatively?
a. greater diversity b. division of labor c. defense of territory d. more reproductive options e. efficiency in catching prey
Which of the following do NOT contain endoplasmic reticulum?
A. noneukaryotes B. animal cells C. eukaryotic cells D. All of the choices are correct.