Cytoskeletal elements are found in the
A) Eubacteria.
B) Archaea.
C) Eukarya.
D) choices B and C only
E) all of the above
E) all of the above
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Which of the following best describes adaptation?
a. When an individual changes its genotype to better suit its environment b. When an organism has heritable traits that “match” its environment c. When an individual changes its phenotype to better suit its environment d. When an organism purposefully mutates to fit its environment
Which MAP protein kinase is the last to be activated in the MAP kinase pathway?
a. Ras b. Raf c. ERK d. Mek e. tyrosine
If a plasma membrane is analogous to the cell, which of the following is analogous to the animal body?
a. a reproductive system b. a muscle system c. the skin d. a digestive system
______ can be used to separate nucleic acids based on size.
Fill in the blank(s) with the appropriate word(s).