A cell is considered to be differentiated when it _____
A) replicates by the process of mitosis
B) loses connections to the surrounding cells
C) produces proteins specific to a particular cell type
D) appears to be different from the surrounding cells
C
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Epinephrine blocks the contraction of muscles in the airways. Which of the other activities of epinephrine is most likely to be regulated by the same type of pathway?
A. Increased sweating. B. Stimulation of heart muscle cell contraction. C. Promotes the breakdown of glycogen in skeletal muscle cells D. Inhibition of saliva production in salivary glands E. Contraction of smooth muscle cells in blood vessels.
Methanogens are classified as ____
a. Crenarchaeota only b. Euryarchaeota only c. Korarchaeota d. Nanoarchaeota e. both Crenarchaeota and Euryarchaeota
Four of the five answers listed below are correctly paired. Select the exception
a. A-C b. C-G c. A-T d. T-A e. purine-pyrimidine
The condition known as "Philadelphia chromosome" is an example of
a. inversion. b. deletion. c. duplication. d. translocation. e. aneuploidy.