Cellular metabolism is organized in order to extract the most energy from food molecules. true false

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome