Substance B is synthesized in neurons, travels through gap junctions, and triggers the transduction of an
electrochemical signal. This is an example of ____.
a. autocrine signaling
b. paracrine signaling
c. long-distance signaling
d. local signaling
e. communication by direct contact
ANSWER: e
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____ can simply be referred to as change over time
Help with this statement please? Thanks.
Parenchyma, collenchyma, and sclerenchyma are classified as tissues in the:a
dermal tissue system. b. vascular tissue system. c. ground tissue system. d. primary tissue system. e. secondary tissue system.
Fungi and plants are similar because they both
A. carry out photosynthesis. B. have cellulose as the main component of their cell walls. C. have glycogen as the main storage carbohydrate. D. All answers are correct. E. have cell walls.
Which of the following best describes the sex chromosomes?
a. They are non-homologous. b. They are completely homologous. c. They are heterozygous. d. They are partially homologous, but also have unique regions.