Select all of the answers that apply.
billions of years ago, earth was a very hot place due to...
Biology, 13.11.2019 22:31 gabriel5575
Select all of the answers that apply.
billions of years ago, earth was a very hot place due to
meteorite bombardment
high levels of carbon dioxide and water vapor
earth's strong gravitational pull
cyanobacteria photosynthesis
Answers: 1
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Which best describes what you will do in the reaching your academic potential course?
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Give three examples of plant activities that are affected by circadian rhythms and natural fluctuations in the length of daylight?
Answers: 1
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Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).
Answers: 2
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