Organism X produces molecule Y, which blocks the activity of 70S ribosomes.
An experiment was carried out to investigate the effect of Y on bacterial cells.
An agar plate with bacteria growing all over its surface had four wells cut into the agar. Different substances were added to each well and the agar plate with bacteria was incubated for a week.
The diagram shows the results after a week.
Which conclusions can be made from these results?
1 )
A
B
3 )
C
4 )
D
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