True or false?

True False  In cell membranes, cholesterol decreasesmembrane fluidity below the transition temperature, but increasesmembrane fluidity above the transition temperature.
True False  Escherichia coli cells grown at 40°Cwould be expected to have a lower percentage of unsaturated fattyacids in their membranes than cells grown at 20°C.
True False  If a sphingolipid contains sialic acid(a.k.a. neuraminic acid) in its oligosaccharide headgroup, theheadgroup will have a new negative charge of minus one.
True False  Groups lining the pores of transport proteinsform weak non-covalent interactions with solute molecules thatreplace the water molecules that normally hydrate the solute.
True False  In active transport, the transported speciesmoves across the membrane against a concentration gradient.
True False  Myristoyl, palmitoyl, and farnesyl groupsanchor otherwise soluble proteins to the extracytoplasmic face ofthe plasma membrane.
True False  Triacylglycerols have three ester-linkedphosphoryl groups that can in turn be ester-linked to serine,choline, ethanolamine, or inositol.
True False  In an amphipathic alpha helix, non-polaramino acid side chains face one side of the helix, and polaruncharged side chains face the other side.