Which best describes the role of nitrogen in the human body?
A. Makes energy in cells
O
B. Main ingredient of protein
O
C. Makes up 1.5% of the human body
O
D. Transfers energy in cells

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

Will mark you as ! keiko’s teacher was discussing the theory of endosymbiosis. she asked keiko to mark the organelles in the diagram that most closely resembled prokaryotes. which organelles should keiko mark? * the first image is the question and the second image is some information to you answer the !