First person gets brainliestone of the differences between a plant and animal cell can be found surrounding the outer cell structure of the plant cell. this part of the plant cell is made of specialized sugars called cellulose. it provides structure and support to the plant cell. what is this structure? a) cell wall b) cytoplasm c) chlorplast d) mitochondria

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design