1. ced-3 and ced-4 mutations
A. Prevent cell corpses from being visible
B. Prevent cells from undergoing apoptosis
C. Generate cells that look like their sister cells
D. Prevent all cell deaths in C. elegans
E. All of the above

2. Which of the following is true
Undead cells in ced-3(lf) mutants always take on cell fates of their sisters
Undead cells in ced-3(lf) mutants sometimes will divide to generate more cells
Undead cells in ced-3(lf) mutants sometime can function properly
Undead cells in ced-3(lf) mutants will interfere with normal functions of other cells
All of the above.

3. ced-3 acts upstream of ced-1
Because ced-3 activity is required for activation of ced-1
Because loss of ced-3 eliminates cell deaths and thus there is no need for engulfment mediated by ced-1
Because ced-1 activity is required for activation of ced-3
ced-1 does not affect cell death and ced-3 does
None of above