Which of the following is not feature of scientific hypotheses? A) They make pre

Question

Which of the following is not feature of scientific hypotheses? A) They make predictions. B) They are based on observations C) They can be tested by experimentation D) They can be revised. E) None of the above, they are all features of hypotheses. Use the following information and the graph below to answer questions The graph dialysis bags (each bag is a semi-permeable membrane which is permeable to water and they each concentration at the start of the experiment) placed into solutions each of unknown solute graph represents change placed different in mass over time ending at 60 minutes. What is the tonicity of Solution I relative to the solution in the dialysis bag? A) hypertonic B) hypotonic C) isotonic D) More information is needed to answer the question. What is the tonicity of Solution 2 relative to the solution in the dialysis bag? A) hypertonic B) hypotonic C) isotonic More information is needed to answer the question. What is the tonicity of Solution 3 relative to the solution in the dialysis bag? A) hypertonic B) hypotonic C) isotonic question. D) More information is needed to answer the question

Explanation / Answer

8. All are the features of scientific hypothesis.The key features of the hypothesis are Testable, Falsifiable, Rational and Prediction. So, the answer is E.

9.The process of osmosis causes water to move preferentially from areas where there is more water to areas where there is less.Since the volume of solution inside the dialysis bag increases,tonicity of the solution 1 will be hypotonic.So, the answer is B.

10.The process of osmosis causes water to move preferentially from areas where there is more water to areas where there is less.Since the volume of solution inside the dialysis bag remain same,tonicity of the solution 2 will be isotonic.So, the answer is C.

11.The process of osmosis causes water to move preferentially from areas where there is more water to areas where there is less.Since the volume of solution inside the dialysis bag decreses,tonicity of the solution 3 will be hypertonic.So, the answer is A.

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