A biochemist extracts a molecule from a cell. This molecule catalyzes a chemical reaction. To what class of molecules does it belong? A. Proteins
B. Carbohydrates
C. Lipids
D. Nucleic acids

Which muscle is responsible for inhalation ?

How does the diagram explain ocean currents? earth tilt 23.5 degreesquestion 1 options: earth's tilt causes uneven heating of earth which causes currents.earth's tilt causes the ocean to move because of gravity.earth's tilt and its rotation cause currents.earth's tilt causes uneven distribution of salt which causes currents.

20 the compound al(nh3)2 has atoms of nitrogen.