Biology, 10.02.2020 06:28, angelrenee2000
A student performed an experiment with bags of dialysis tubing filled with distilled water to model the process of osmosis. Dialysis
tubing is a semi-permeable membrane that allows some materials to passively move through the tubing. The dialysis tubing bags
were massed on a balance and then placed in beakers with solutions of sucrose of various concentrations, ranging from OM to LOM
Sucrose.
Select which question the experimental design is best addressing?
How do hypotonic solutions prevent cells from surviving?
How do freshwater organisms maintain homeostasis when placed into a
hypertonic condition?
How does the effect of environmental sucrose concentrations impact the
movement of water across a membrane?
How does the temperature in which bags of dialysis tubing are placed
directly impact the exchange of materials across the membrane?
Submit
Answers: 2
Biology, 21.06.2019 23:00, jacquicmoreland2106
Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression. c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression. d-neelaredoxin is only produced when there is exposure to o2 or h2o2.
Answers: 3
Biology, 22.06.2019 05:40, Student658
Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine
Answers: 1
Biology, 22.06.2019 06:20, cherylmorton7302
All organisms contribute some water to the water cycle by conducting
Answers: 1
Biology, 22.06.2019 07:00, johndiaz26
Give an example of a trait that is controlled by more than one gene.
Answers: 1
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