Not all Protists are unicellular so answer choice 4 is false.
Plant cell walls are rigid membranes on the outermost part of the cell. The cell wall provides a structured shape for the cell, helping the cell retain its form and shape. The cell wall also controls the rate of replication, allowing plant cells to replicate at a much slower rate than animal cells.
Is size exclusion chromatography one of the choices?
All the lactating females in a pride suckle cubs showing no favoritism for their own offspring. The reason for this is that each lioness is enhancing her own genes' success by helping to raise her sisters' offspring. Mothers give birth to up to 6 cubs at a time but litters of 2 or 3 are more common.
Hope this helped.