Classify the following molecules based on their predicted movement across a semipermeable plasma membrane:
A. Ions towards areas of higher concentration - Require Membrane Proteins to Cross the Membrane
B. Glycerol - Can Cross the Membrane Without Aid of Membrane Proteins
C. Nonpolar molecules - Can Cross the Membrane Without Aid of Membrane Proteins
D. Polar molecules - Require Membrane Proteins to Cross the Membrane
E. Amino acids such as tryptophan - Require Membrane Proteins to Cross the Membrane
F. Lipid-soluble molecules - Can Cross the Membrane Without Aid of Membrane Proteins
G. Carbon dioxide - Can Cross the Membrane Without Aid of Membrane Proteins
H. Alcohol - Can Cross the Membrane Without Aid of Membrane Proteins
I. Sugars such as starch - Require Membrane Proteins to Cross the Membrane
J. Oxygen - Can Cross the Membrane Without Aid of Membrane Proteins
