0 0.5
1
2
4 8
12 h
А
1. Recall the photosystem II protein 1. Here are
two blots that show the abundance of D1 as a
function of time for a culture of Chlamydomonas
cells. A show D1 abundance under low light.
B shows D1 abundance under the same low light but
the cells were pre-incubated with lincomycin, a drug
that blocks chloroplast protein synthesis.
Low light
B
Taking the results of both experiments together,
what can we reasonably conclude?
Low light + Lincomycin
A. The constant abundance of D1 in A indicates that the protein is not being damaged.
B. Under high light, blot B would look similar to what is shown.
C. Di is being damaged faster in B than in A.
D. In A, the rate of D1 repair keeps up with the rate of damage.