What is most often given a value of zero to describe an object position on a srtaight line

Jason is a body builder. despite being more fit, he weighs more than his brother ryan, who is the same height. which is a possible reason? a. jason has more muscle mass than ryan does. b. jason has more body fat than ryan does. c. jason has more muscle mass and body fat than ryan does d. jason has less body fat than ryan does.

Describe the function of the endomembrane system? what organelles are involved?

The energy produced as a result of this flow of electrons from atom to atom is called