The following are 1 points each. The hydrophobic portions of an RNA molecule are located of the inside of the structure. Before organisms developed the ability to use sunlight as a power source, oxygen was found mostly as ozone in the atmosphere. A strand of DNA may be positively charged or negatively charged. Lead citrate would probably make a good stain for electron microscopy.
Ionic bonds are be stronger in a hydrophilic environment.
If unsealed red blood cell ghosts were stripped, anchorin would still be present but spectrin would be removed. A protein must unfold to cross a membrane through a gated transport system. 11.An affinity column has a protein attached to it. The following are 2 points each. Name an organelle which originated from infolding of the plasma membrane.