FA Bio 240: Anatomy & Physiology I Lecture Ex # Summer 2017 Instructor: Dr. Prec
ID: 275893 • Letter: F
Question
FA Bio 240: Anatomy & Physiology I Lecture Ex # Summer 2017 Instructor: Dr. Precious Alawn 36, Which of the following is most likely to move through the cell membrane by facilitated diffasion? A. 02 B. CO2 C. small lipids D. Nat 37. What is the basic differeace between simple diffison and facilitated diffision across cell membrane? A. Simple diffusion requires molecules to move through special doorways in the cell membrane B. In simple diffusion, molecules move down the concentration gradient but in facilitated diffiesion molecules move up the concentration gradient C. In facilitated diffusion, molecules only move with the aid of a protein in the rn D. Simple diffusion is passive but facilitated diffusion is an active process that uses energy 38. Which of the following is least likely to increase the rate of diffusion? A. small molecule size B. higher concentration of molecules C. small concentration gradient D. high temperature 39 Active transport processes: A. move solutes with or along their concentration gradients B. require cells to expend energy (ATP). C. move solutes from a higher concentration to a lower concentration D. move solutes through the phospbolipid bilayer without the use of integral proteins 40. A process that requires energy to move a substance against its concentration gradient is called A active transport B. passive transport. C. facilitated transport D. osmosts 41. Place the following steps of endomembrane system function in the correct order l. Golgi apparatus receives transport vesicles from the RER. 2. Ribosomes on the RER synthesize proteins. 3. Proteins are packaged into transport vesicles 4. Modified proteins may be secreted from the cell by cxocytosis 5. Proteins are modified by the Golgi apparatus A. 2, 3, 1, 5, 4 B. 3, 2, 1, 4, 5 C. 2, 4, 3, 1, 5 D. 1,2,3, 5,4 42. Which of the following is NOT one of the functions of the cytoskeleton A. allow certain cells to move B. serve as the site for metabolic reactions such as protein synthesis C. provide an internal framework for the cell D. anchor various organellesExplanation / Answer
36. Small uncharged non-polar molecules such as small lipids and gases are transported through simple diffusion. But Larger molecules require transport channels or protein.
ANSWER: D. Na2+
37. Simple diffusion do not require any channels or proteins. Facilitated diffusion require a channel or protein.
ANSWER: C.
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