Question

multiple select question select all that apply select the accurate statements concerning membrane fluidity. phospholipids interact strongly with each and cannot easily move laterally within the membrane. phospholipids are relatively free to move laterally within the membrane. unanchored proteins are relatively free to move laterally within the membrane. both anchored and unanchored proteins are fixed in space within the membrane and cannot easily move laterally.

Explanation:

Phospholipids in a membrane can move laterally due to the fluid - like nature of the lipid - bilayer. Unanchored proteins are also free to move laterally within the membrane. Anchored proteins are fixed, but unanchored ones are not.

Answer:

B. Phospholipids are relatively free to move laterally within the membrane.
C. Unanchored proteins are relatively free to move laterally within the membrane.