What is the most important message
delivered by this paper?
A. ced-1 is important for removing cells with
surface exposed PS in C. elegans
B. psr-1 is important for removing cells with
surface exposed PS in C. elegans
C. tat-1 is important for maintaining PS asymmetry
on plasma membrane
D. tat-1 is important for removing cells with
surface exposed PS in C. elegans
E. None of the above
tat-1 is a gene
A. that is important for killing the cells
B. that is important for cell corpse engulfment
C. that is important for removing cells with
surface exposed PS
D. that is important for keeping PS in the inner
leaflet of plasma membrane
E. All of the above
The fact that cells with surface exposed PS are
randomly lost at a low percentage suggests
A. PS is a signal that can induce phagocytosis
B. PS is a signal that will induce phagocytosis
C. PS is an efficient signal for cell corpse
engulfment
D. PS is an efficient signal for cell killing
E. All of the above
Loss of ced-1 can block missing cell
phenotype of tat-1(lf) animals, because
A ced-1 promotes cell death
B ced-1 is important for recognizing surfaceexposed PS and phagocytosis of PS-exposed
cells
C ced-1 is important for PS externalization in
tat-1(lf) animals
D ced-1 is important for cell corpses engulfment
E All of the above