"a student filled a dialysis tube with 97% water solution and sealed the ends. the tube and its contents had a mass of 55 grams. the student placed the tube in a solution, and the mass of the tube and its contents increased to 60 grams. into which solution was the dialysis tube placed?
(1)0% water
(2)95% water
(3)97% water
(4)99% water"

List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.

Loss of protected health information collected for research should be directly reported to:

The table lists the observations students made about four specimens under a microscope. based on these observations, what specimens did the students examine? animal plant virus prokaryote cell membrane present ribosomes present lysosomes present nuclear membrane present cell wall present ribosomes present nuclear membrane absent cell wall present ribosomes present nucleus present large vacuole present reproduces inside of a cell nucleus absent rna present 2019 edmentum all rights reserved intl