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• your lab group is experimenting with the diffusion of molecules across a membrane. dialysis tubing is used as a model cell membrane because is it semi-permeable, allowing small molecules to cross the membrane, but not larger molecules, like starch. a starch solution is placed in the dialysis tubing and then the dialysis tubing is placed in an iodine and water solution. iodine is used as an indicator for the presence of starch. normally, iodine is a yellow-brown color (on the left), but in the presence of starch, it turns a deep purple (right). after observing the experimental setup for 20 minutes, the iodine solution remains brown, but the starch solution inside the dialysis tubing is purple and swollen. what cannot be concluded from the results?
  
• a 2-column table has 5 rows. the first column is labeled x with entries negative 2, negative 1, 0, 1, 2. the second column is labeled f (x) with entries 16, 8, 4, 2, 1.which exponential function is represented by the values in the table?f(x) = one-half(4)xf(x) = 4(4)xf(x) = 4(one-half) superscript xf(x) = one-half (one-half) superscript x
  
• according to balfour, how does the british government view the zionist movements and its goals?
  
• what plant tissue located at the tips of roots and shoots will differentiate into different plant cells?
  
• therefore a prince, so long as he keeps his subjects united and loyal, ought not to mind the reproach of cruelty; because with a few examples he will be more merciful than those who, through too much mercy, allow disorders to arise, from which follow murders or robberies; for these are wont to injure the whole people, whilst those executions which originate with a prince offend the individual only. –the prince, niccolò machiavelli which statement best summarizes the argument in the passage? a cruel leader will prevent subjects from living in a place of crime and violence. a cruel leader will cause subjects to commit crime and violence in rebellion. a cruel leader will execute subjects who are guilty of committing crime and violence. a cruel leader who is faced with crime and violence must unite subjects.
  
• consider the inequality -20.2 > 0y. which of the following must be true? check all that apply. you cannot divide by zero. the inequality is equivalent to -20.2 > 0, which is false. the solution is y > 0. the solution is 0 > y. the solution is y = 0.
  
• a limitation on the president’s power to appoint ambassadors is that the senate must approve them. the house must approve them. the house and senate must approve them. the supreme court must approve them.
  
• doing sit-ups will not reduce belly fat because __________. a. sit-ups do not burn enough calories to reduce fat b. anaerobic exercises do not utilize fats c. sit-ups are difficult to perform regularly enough to reduce belly fat d. dieting is the only way to reduce belly fat
  
• which of the following health care programs will wait to pay their share of medical coverage until after treatment is provided? a. fee-for-service plan b. health managed organization c. preferred provider organization d. point-of-service plan please select the best answer from the choices provided a b c d
  
• the tone of this speech could best be described as expressing a feeling of fear. hope. anger. pride.