Breads and other whole grain foods are composed of very large polysaccharide molecules which contain hydrogen, oxygen, and which other element?
a)carbon
b)iron
c)nitrogen

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

Cassandra made a venn diagram to compare and contrast the two stages of cellular respiration. which belongs in the area marked x? energy is released. oxygen is used up. glucose is broken down. carbon dioxide is used up.

What kinds of molecules can pass through the cell membrane without any problem?