What factors contribute to membrane fluidity? what factors contribute to membrane fluidity? hydrogen bonds cytoskeleton hydrophobic interactions covalent bonds glycerol and fatty acids hydrophylic interactions?

Hydrophobic interactions is one of the factors that contribute to membrane fluidity. The hydrophobic effect is cause of the desimination of a mixture of oil and water into its two components. It is also responsible for effects related to biology, including: cell membranes and vesicles formation, protein folding, insertion of membrane proteins into the nonpolar lipid environment and protein-small molecule associations.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.