All the biological macromolecules contain carbon, hydrogen and oxygen. However, most do not contain nitrogen. The category that contains nitrogen are

A) Lipids
B) Proteins
C) carbohydrates
D) unsaturated fats

Which excerpt from the land, part 4 best supports the claim that paul is a talented horseback rider? a/“figure that says more than anything else! now, i want to ride that stallion! " b/my daddy shook his head. "paul only rides horses he knows. ” c/? i glanced over at the other rider. the fellow was older than i, and had the weight of a man on him. d/a man out of alabama, man name of ray sutcliffe, told my daddy i was such a good rider, he wanted me to ride some races for him.

Suppose you could go back in time to interview henri becquerel on the day he discovered radioactivity. from his perspective, write an account of the discovery.

The dense layer of connective tissue that surrounds an entire skeletal muscle is the