Please put your name on this paper and bubble your name (last name first, please

Question

Please put your name on this paper and bubble your name (last name first, please) on your scan form not want anything other than your name and your answers on your scan form Multiple choice questions are worth 1.5 points each. Please choose the best available answer from those listed. Short answer questions are at the end with point values indicated. 1. Can a cell be hypertonic? a.) Yes b. No 2. Which describes the correct direction for flow of water in osmosis? From 150 mOsm/L to 300 mOsm/L From 300 mOsm/L to 150 mOsm/L a. b. 3. The osmolarity of a solution of 0.1 M Na)HPO4, 0.3 M sucrose would be a. 0.2 Osm/L b. 0.3 Osm/L c. 0.4 0sm/L d. 0.6 Osm/L e.0.7 Osm/L 4. Which term describes the physical attraction between ligand and binding site? a. Specificity Affinity c. Saturability d. Transduction e. Stereochemistry What would the graph look like when graphing binding of a ligand as a function of the concentration of available ligand? Assume a broad range of ligand concentrations. 5. a. Linear b. Parabolic c. Sigmoidal curve

Explanation / Answer

For 0.1M Na2 HPO4 = moles/ 1 L

Moles = 0.1

Osmolarity = Moles ×Numbers of ionizing particles for the compound

Osmolarity =0.1 x 2 =0.2 Osmol/L

Na will dissociate into 2 ions of sodium. Therefore, we have taken 2.

       4. The 2nd option is the correct answer.

       5. It is a parabola structure, therefore, the correct answer is 2nd option (b).

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