In the blood clotting process, platelets arrive at the site of damage and start secreting substances to attract more platelets. More platelets arrive at the site and secrete attractants to recruit more platelets. This is an example of
A. negative feedback.
B. positive feedback.
C. feedforward regulation.
D. paracrine signaling.
E. electrical signaling.
B. positive feedback.
Biology & Microbiology
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What is the chordate feature still present in the human adult?
a. pharyngeal gill slits b. nerve cord c. notochord d. tail e. nerve cord and notochord
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Benedict's solution is commonly used to test for the presence of
a. proteins. b. certain carbohydrates. c. nucleic acids. d. lipids.
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A chiral compound can have more than one carbon as a chiral center.
a. true b. false
Biology & Microbiology
In multicelled species, spores germinate and give rise
to filaments called __________. Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology