The image at right shows (A) RNA blot analysis (hsp1) and (B) protein abundance (HSP, Actin) for Heat shock protein 1 and Actin. At t=0 a culture of Chlamydomonas cells was shifted from 24° to 40°C. Which of the following explanations is most consistent with the data shown? 24° 40° A 1 1.5 2 3 8 12 24 h hsp1 0 3 6 12 24 h HSP Actin O A.