I am a semi-permeable layer around the cell that encloses the contents of the cell. What am I? * 6 points
nucleus
chloroplast
cell wall
cell membrane

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

Did the vinegar diffuse all the way to the center of any of the cubes? if so, which ones? what does this tell you about surface area-to-volume ratio and the diffusion rate?

What mistake did john needham make that caused him to conclude that spontaneous generation for microorganisms occurred? a. he re-contaminated his boiled broth solutions. b. he destroyed the vital force in the solutions. c. he did not boil his broth solutions, only warmed them. d. he failed to seal his flasks of boiled broth. e. he allowed his assistant to conduct the experiment which he did not monitor closely.