A scientist is comparing the outer layer of an onion cell to the outer layer of a human cheek cell. What is unique about the outer layer of the onion cell compared to the cheek cell? in contains proteins

it contains cellulose

it contains nucleic acids

it is selectively permeable

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

Which statement best describes a typical difference that could be found between the “analysis” and “conclusion” sections of a lab report?

During photosynthesis, hydrogen ions are most directly used to in the chloroplast pictured above. a) make glucose b) make chlorophyll c) produce carbon dioxide d) drive the production of atp