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Communication that happens between two separate cells, rather than inside a single cell, is described by which term in cell signaling?
AIntercellular signaling
BIntracellular signaling
CAutocrine signaling
DEndocrine signaling
Answer & Solution
Correct answer: A. Intercellular signaling
1. Communication between two different cells is called intercellular signaling.
2. Communication that happens within a single cell is called intracellular signaling.
3. The prefix inter- means between, which matches signaling that passes from one cell to another, the situation described in the stem.
4. Autocrine and endocrine signaling are specific forms of intercellular signaling defined by target and distance, not the general inter and intra distinction being tested here.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 9 "Cell Communication", section 9.1 Signaling Molecules and Cellular Receptors_
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