the scientific method begins with a scientific question this question should lead to one or more testable hypotheses which of the following is a scientific question that could lead to a testable hypothesis A.) Should people be allowed to keep large cats as pets, such as cheetahs, tigers, and lions? B.) Which of the following is the preittiest large cat: Cheetah, tiger, or lion? C.) Are lions friendlier than tigers or cheetahs? D.) Are cheetahs more closely related to tigers or lions?

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).