How do corals living in deep, cold water obtain their energy?
a. by feeding on plankton
b. through mutualism with protists
c. through solar radiation
d. by extracting nitrogen from plants
a. by feeding on plankton
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The long extension of a cell that can propel a cell forward by whipping back and forth (such as human sperm) is called a ________.
A. flagellum B. vesicle C. cilium D. pilus
LSD binds receptors that normally bind
A) dopamine. B) serotonin. C) epinephrine. D) trace amines.
Asexually produced daughter cells are
A) identical to each other. B) different from each other. C) identical to the parental cell. D) different from parental cell. E) identical to each other and to the parental cell.
Many people, when they have a sinus headache, often use decongestant nasal sprays. Why are such sprays useful?
A) They have a pain-blocking effect in the brain. B) They dry out the breathing passageways in the pharynx, making it easier to breathe. C) They reduce swelling, allowing the sinuses to drain. D) They reduce the symptoms of sore throat inflammation, which exacerbates the pain.