Social networking sites are changing the way that businesses
a. pay their employees
b....
Answers: 2
Biology, 22.06.2019 01:00
Which part of cellular respiration must occur before any of the other steps can occur
Answers: 2
Biology, 22.06.2019 01:20
Which of the following is not considered an appendage of the skin? nails glands follicles none of the above
Answers: 2
Biology, 22.06.2019 11:30
Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.
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
History, 21.02.2020 19:43
English, 21.02.2020 19:43
English, 21.02.2020 19:43
Biology, 21.02.2020 19:43
Mathematics, 21.02.2020 19:44