What is the main function of gas exchange A) To remove carbon dioxide and supply oxygen to
the body
B) To remove oxygen from the body
C) To supply carbon dioxide and remove oxygen
from the body
D) To supply water to the body cells

Which macromolecules are polymers made of nucleotides (a) fatty acids (b) nucleic acids (c) carboxylic acids (d) amino acides

You see a white marker with an orange circle and black lettering. what does this marker tell you

Which of these has happened to your food by the time it reaches your small intestine? a. all the macromolecules have been broken down completely. b. lipids and starches have been partially broken down. c. starches and proteins have been partially broken down. d. proteins and lipids have been broken down into subunits.