What can be inferred from these sentences? the wind carried the radiation for miles over nearby countries. three thousand lives were lost to cancer caused by the radioactivity. presently, europeans are still being exposed to the leftover radiation. nuclear power plants are not a useful source of energy. the effects of a radiation leak can spread far and last for a long time. people exposed to radioactivity die within a few minutes. the effects of a radiation leak do not spread far from the leak.

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).

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird

Which topic is most likely to be studied by bo which topic is most likely to be studied by botanist? insect metamorphosis, viral infection, plant growth, animal physiology