Lec_quiz1_ans

Lec_quiz1_ans - L100 Lecture quiz#1 Answer Key 1 What role...

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L100 Lecture quiz #1 Answer Key 1. What role do membrane proteins have in facilitated diffusion? Explain. (1 pt) membrane proteins allow the passage of large or charged particles across the plasma membrane like opening a doorway for the molecules or ions to go through – going down their concentration gradient without these specific membrane proteins the molecules would not be able to diffuse across the membrane 2. (a) Assume that small molecules are representing water molecules, which can pass through the membrane, and the large round molecules are representing Urea molecules, which can not pass through the membrane. Label the: solvent, solute, hypotonic side & hypertonic side (2 pts) solvent solute Hypotonic side Hypertonic side (b) For the above diagram will the water move towards the right side, the left side or stay the same? (1pt) water will move towards the right side (towards hypertonic solution) 3. Complete the following table: (3pts) Choose one of the two options at the top of each column for each cell in that column.
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This note was uploaded on 01/18/2012 for the course L 100 taught by Professor Dr.susanhengeveld during the Fall '11 term at Indiana.

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Lec_quiz1_ans - L100 Lecture quiz#1 Answer Key 1 What role...

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