Eukaryotic ribosomes are composed of 50S and 30S subunits.
Answer the following statement true (T) or false (F)
False
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The transduction of sound waves into action potentials takes place _____
A) within the tectorial membrane as it is stimulated by the hair cells B) when hair cells are bent against the tectorial membrane, causing them to depolarize and release neurotransmitter that stimulates sensory neurons C) as the basilar membrane becomes more permeable to sodium ions and depolarizes, initiating an action potential in a sensory neuron D) as the basilar membrane vibrates at different frequencies in response to the varying volume of sounds E) within the middle ear as the vibrations are amplified by the malleus, incus, and stapes
Which statement best describes the concept of alternation of generations?
(a) One generation of plants is skipped every other year. (b) There are two phases, a sporophyte and a gametophyte. (c) The parental generation alternates with a juvenile generation. (d) A green sporophyte phase produces food for a nongreen gametophyte.
When blood calcium levels fall, the ________ secrete a hormone that causes greater calcium release from the bones
Fill in the blank(s) with correct word
The endocrine system sends signals using chemical messengers called ________
Fill in the blank(s) with correct word