A student has a toy car that is green, made of iron(metal)and weighs 52 grams. If the student drops the car in a grassy field, how could the student find his toy car? A. Use a magnifier lens to find the car by its color.
B. Place a sample of the field in water to find out its density.
C. Weight samples of the area to find a sample that is 52g.
D. Place a magnet over the area to attract the car

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries

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).

Describe the trends in electron configuration in the periodic table by selecting the terms from the drop down menus