How does the size of the moon compare to the size of Earth?(1 point) The moon is about one-half the size of Earth. The moon is about three-fourths the size of Earth. The moon is about one-fourth the size of Earth. The moon is about one-sixth the size of Earth.

Name the type of chemical that speeds up digestion

Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.

Which type of neuron stimulates muscles to contract?