Biology, 13.12.2019 10:31 Diazvictoria
Which of the following correctly describes the importance of an nitrogen cycle a. to recycle carbon-based compounds b. to replenish oxygen in the atmosphere c. to decompose dead animals d. to create ammonia that plants absorb
Answers: 1
Biology, 21.06.2019 19:30
1. the is the thinnest part of the earth. 2. the is the thickest part of the earth. 3. what metals are mentioned in the text?
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
Which of the following correctly describes the importance of an nitrogen cycle a. to recycle carbon-...
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