What did Blackman and Matthaei discover about the two reactions of photosynthesis?
O A. Both reactions are light dependent, but the first is temperature
independent, and the second is temperature dependent.
OB. The first reaction is light independent and temperature dependent,
while the second reaction is light dependent and temperature
independent.
O C. Both reactions are temperature dependent, but the first is light
dependent, and the second is light independent.
D. The first reaction is light dependent and temperature independent,
while the second reaction is light independent and temperature
dependent

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).