________ are a type of sensory receptor that consists simply of the tips of dendrites
Fill in the blank(s) with correct word
Free nerve endings
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What type of bonding is likely to occur between two water molecules or strands of DNA?
A. covalent. B. ionic. C. hydrogen. D. both hydrogen and covalent. E. both hydrogen and ionic.
The neurotransmitter acetylcholine induces vasodilation in intact blood vessels due to release of
A. nitric oxide from the endothelium. B. nitric oxide from the smooth muscle layer. C. nitric oxide from the lymphatic system. D. carbon monoxide from the endothelium. E. norepinephrine from the endothelium.
cDNA is copied from
A) DNA. B) protein. C) mRNA. D) a pictogram.
How would a plant that normally grows in a shady habitat respond when exposed to a high level of far-red light?
a) Its stem would not elongate because it grows well in far-red light. b) Its stem would not elongate because it cannot grow in far-red light. c) Its stem would elongate to escape the far-red light. d) Its stem would elongate to absorb more far-red light.