A scientist studies the formation of the protein hemoglobin. Arrange the labels to complete the steps for the formation of hemoglobin.

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

Facilitated diffusion move large molecules and/or polar molecules across the cell membrane. what does facilitated diffusion use to do this?