Which molecules move across the cell membrane

Which of the following does not describe a physical property of iron? a iron is silvery-white or gray in color. b iron has a boiling point of about 3,000°c. c iron is a magnetic element . d iron and sulfur react to form iron sulfide.

Did you know that a single bee would have to go to over 2 million flowers to make a single pound of honey?

Which substance contains thylakoids? a) nadph b)atp c)stroma d)chloroplast