What is a galaxy? a) all the billions of stars that exist in space b) a cluster of millions of stars in a definite pattern in space c) one or more planets orbiting around a star, similar to our sun d) a cluster of stars, planets, gas, and dust all held together by gravity

What best describes lactic acid fermentation?

Nephrons, the functional unit of kidneys, are responsible for formation of urine. the sentences describe situations that are the result of problems in the urine formation process. for the nephron shown below, match each situation to the step in the urine formation process where the problem lies.

Produce proteins by following coded instructions that come from the nucleus of the cell.