Bls.2 & 3 --- Read ch.21, Sec.3, and do Rev. ques. (p.647). Test on ch.21 will be Fri., 6/2.
Bl.4 --- Study for Test on chs.24 & 25 (Bacteria & Viruses), using all types of study guide (end-of-chapter text pages, all packets and worksheets, HW answers, powerpoint slides now in Classroom, and class notes) to help you prepare. Test will be Fri., 6/2.