How do pesticides from agriculture get into water ways ?
a. runoff
b. the oxygen...
Answers: 2
Biology, 22.06.2019 11:00
Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?
Answers: 1
Biology, 22.06.2019 11:30
Which of the following explains why a tree is often used as a model to represent the principle of common descent
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, 29.07.2019 21:30
Social Studies, 29.07.2019 21:30
Biology, 29.07.2019 21:30
History, 29.07.2019 21:30
Social Studies, 29.07.2019 21:30
History, 29.07.2019 21:30