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5. Which of these best describes a climax community
that results from succession?
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Answers: 1
Biology, 21.06.2019 18:00
Cells tend to have a relatively small and uniform size. why aren’t cells larger?
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Biology, 22.06.2019 00:00
How does the study of genetic disorders such as pku biologists understand normal alleles?
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Biology, 22.06.2019 03:00
Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .
Answers: 1
Biology, 22.06.2019 13:20
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
English, 11.10.2020 15:01
Biology, 11.10.2020 15:01
English, 11.10.2020 15:01
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History, 11.10.2020 15:01