Which three steps describe how an animal obtains and uses energy for growth?
First, an animal eats another organism. Then, food is built into larger molecules. Next, the animal's cells use molecules
make new cells
First, food is built into larger molecules. Then the animal eats another organism. Next, the animals cells use molecules
make new cells
First, an animal eats another organism. Then food is broken down into smaller molecules. Next the animals cells use
molecules to make new cells
First, food is broken down into smaller molecules Then the animal eats another organism Next the animals cells use
molecules to make new cells.
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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).