The role of in the cell membrane is to add flexibility to the membrane 1.cholesterol
2.lipid bilayer
3.marker proteins
4.channel proteins

Describe the primary and secondary immune response in terms of speed and number of antibodies produced?

Which entry is in the wrong position in the table?

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.