Influx of ________ ions initiates neurotransmitter release into the synaptic cleft by the process of ________
Fill in the blank with correct word.
Answer: calcium; exocytosis
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The structure of a mature, functional fruit always includes _____
A) one or more seeds B) extensive vascular connections to the parent plant C) fleshy cells rich in sugars D) brightly colored pigments to attract animal dispersers E) subtending bracts to protect against predators
During which cellular process do all three forms of RNA associate?
A. ribosome assembly B. chromatin formation C. formation of the nucleolus D. protein synthesis
Dehydration can be a problem for plants in cold habitats
Indicate whether the statement is true or false
Which group(s) of plants requires water in order for the sperm cell to swim to the egg?
a) seed plants b) only ferns c) only mosses d) both mosses and ferns e) all plants