Biology, 09.09.2019 19:20 aaliyahettorre
Three lab groups carried out an experiment to identify the concentration of sucrose in six solutions. each unknown contained one of the following sucrose concentrations: 0.0 m, 0.2 m, 0.4 m, 0.6 m, 0.8 m, and -1.0 m. cubes of sweet potato (1 cm3) were soaked for 24 hours in each solution and weighed to determine the change in mass. each data entry represents the average of three sample replicates expressed as percent change in mass following a 24-hour soak in the unknown solutions. from the data given, which statement most accurately describes what is occurring in response to a particular unknown solution?
unknown percent change in mass percent change in mass percent change in mass
group 1 group 2 group 3
a 6.6 7.8 7.5
b 3.1 3.7 2.9
c -2.7 -3.5 -2.5
d 0.7 0.5 1.1
e -11.6 -12.3 -12.6
f -5.2 -6.2 -4.9
a) unknown solution c represents a sucrose concentration slightly higher than the molarity of sweet potato cells, thus water is transported out of the cells.
b) osmosis of water molecules from unknown solution b likely caused the increase in mass observed.
c) unknown solution e contains the highest concentration of sucrose, and the change in mass is due to the active transport of sucrose out of the cell.
d) passive transport of sucrose out of the potato cells explains the change in mass observed for unknown solution f.
Answers: 3
Biology, 22.06.2019 03:00
Lola needs to sign 6 invitations. using stopwatch that measures time to tenths of a second, it takes lola 5.3 seconds to sign her full name. going by the accuracy of the stopwatch, which is the most accurate determination for the number of minutes lola needs to sign all 96 invitations
Answers: 1
Biology, 22.06.2019 04:00
Regarding most of the narrator’s story, which word best describes the tone?
Answers: 1
Biology, 22.06.2019 13:50
The fluid mosaic model of the membrane proposed that membranes
Answers: 1
Three lab groups carried out an experiment to identify the concentration of sucrose in six solutions...
English, 30.03.2021 21:00
Biology, 30.03.2021 21:00
History, 30.03.2021 21:00
Mathematics, 30.03.2021 21:00
Mathematics, 30.03.2021 21:00
Mathematics, 30.03.2021 21:00
Business, 30.03.2021 21:00
Spanish, 30.03.2021 21:00
English, 30.03.2021 21:00
Physics, 30.03.2021 21:00
Spanish, 30.03.2021 21:00
Social Studies, 30.03.2021 21:00