Unformatted text preview: e) binding, endocytosis, cell export 3. The main mechanisms of signal transduction are ______ . a) phosphorylation b) activation of kinases c) activation of proteases d) activation of nucleases e) all of the above 4. Examples of “second messengers” are _______. a) ATP and hormones b) cAMP and Ca 2+ c) IP3 and DAG d) A and B e) B and C 5. Apoptosis involves all but the following: a) fragmentation of DNA b) cell-signaling pathways c) lysis of cells d) activation of cellular enzymes e) digestion of cellular contents by scavenger cells...
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- Winter '12
- Cell Signaling, local signaling, hormonal signaling