The correct answer is small hydrophobic molecules.
The smaller the molecule and the more hydrophobic, or nonpolar, it is, the more rapidly it will diffuse across a membrane. It is because of the composition of membrane (lipid bilayer). By contrast, membrane is highly impermeable to charged molecules (ions), no matter how small they are.
Answer:
Mutations in the HBB (beta-globin) protein causes symptoms of sickle cell disease.
Answer: Cartilage and Bone are specialised forms of connective tissue. They are both made up of cells embedded in an extracellular matrix.
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