Which of the following is NOT a nonvascular
plant?
a. moss
b. hornwort
c. liverwort
d. fern
e. all of these ARE nonvascular plants
D
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To signal a stronger stimulus, action potentials within a neuron?
A. Get bigger B. Travel more quickly C. Last Longer D. Are generated More frequently
Autoimmunity is a(n):
a. automatic response to an antigen. b. failure of self cell recognition. c. reaction to environmental antigens. d. normal response to infection. e. response between the autonomic nervous system and the immune system.
The bones of the arms and legs belong to the ______ skeleton.
a) axial b) thoracic c) vertebral d) appendicular
Bacterial cells can sense a gradient ONLY by identifying ________ changes rather than ________ differences because of their small ________
a. spatial / temporal / cell size b. spatial / temporal / chemoreceptors c. temporal / spatial / cell size d. temporal / spatial / chemoreceptors