The formal taxonomic system used by biologists today was developed by __________.
Fill in the blank(s) with the appropriate word(s).
Ans: Carolus Linnaeus
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What stimulates activation of B and T cells?
a. cell recognition of an antigen b. production of complement c. histamine production d. lysozyme release e. cytokine production
The occurrence of an action potential can best be compared to a
a. switch to turn a lamp on and off. b. volume control on a stereo. c. door to a classroom. d. room light dimmer switch. e. gradually inclined ramp.
The proper order for the scientific process is:
A. experiment - observation - predictions - hypothesis B. predictions - experiment - observation - hypothesis C. observation - hypothesis - predictions - experiment D. hypothesis - observation - experiment - predictions
When whole cells or large molecules in solution are engulfed by a cell, this endocytosis is specifically termed
A. facilitated diffusion. B. pinocytosis. C. phagocytosis. D. facilitated transport. E. exocytosis.