Which statement is true? Question 10 options:

A. Osmosis is the movement of gases, such as oxygen and carbon dioxide. Diffusion is the movement of water.

B. Diffusion requires the use of energy, but osmosis does not.

C. Diffusion is the movement from areas of high concentration to areas of low concentration. Osmosis is a type of simple diffusion.

D. Both osmosis and diffusion must occur through a semipermeable membran

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).