Instructors may assign a portion of the Review Sheet questions using Mastering A

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Instructors may assign a portion of the Review Sheet questions using Mastering A&P" REVIEW SHEET The Cell: Transport Mechanisms and Permeability EXERCISE Name Lab Time/Date Choose all answers that apply to questions 1 and 2, and place their letters on the response blanks to the right. 1. The movement of molecules a. reflects the kinetic energy of molecules c. is ordered and predictable d. is random and erratic b, reflects the potential energy of molecules 2. Speed of molecular movement a. is higher in larger molecules b. is lower in larger molecules c increases with increasing temperature d. decreases with increasing temperature e. reflects kinetic energy 3. Summarize below the results of Activity 3, Investigating Diffusion and Osmosis Through Nonliving Membranes Sac 1: 40% glucose suspended in distilled water Did glucose diffuse out of the sac? Did the sac weight change? Explanation Sac 2: 40% glucose suspended in 40% glucose Was there net movement of glucose into or out of the sac? Explanation: Did the sac weight change? Sac 3: 10% NaCl suspended in distilled water Was there net movement of NaCl out of the sac? Direction of net osmosis Sac 4: 40% sucrose suspended in distilled water Was there net movement of sucrose out of the sac? Explanation: Direction of net osmosis: 61

Explanation / Answer

1: c

2: a

3: yes Glucose diffuse out the sac but weight don't change

B: no net movement in or out the sac

C:yes nacl can move in out the sac

Direction is higher to lower

D: yes movement in out the sac and movement from higher to lower

4: it is a thin sheet membrane in which many holes are present that's why material can pass through them

5: Glucose: inside the sac nacl: inside the sac albumin:no movement water: in side the sac

6: in distilled water movement by osmosis and Glucose have by diffusion

7: a: RBC larger in size b: RBC shrinks c: RBC change their shape

8: transport process is active

9: a: active process

B: passive process

C: active process

D: active process

E: passive process

10:

11: in both cases liquid can pass through them and move from higher to lower concentration

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