A&P-Practice Exam 1 w08

A&P-Practice Exam 1 w08 - Supplemental Instruction...

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Supplemental Instruction Pavelescu | 1 Anatomy & Physiology Practice Exam 1 DIRECTIONS: Circle the most appropriate answer to the below questions. 1. The drugs Procaine and Lidocaine, both local anesthetic drug, (also known as Novocaine and Xylocaine respectively) block sodium channels in plasma membranes of neurons. Given this information, which one of the following statements is most likely true about a cell bathed in a solution that contains Procaine or Lidocaine? a. There will be no osmosis across the cell’s plasma membrane. c. Na + will be unable to cross the membrane by facilitated diffusion b. Na + will diffuse from a low concentration to a high concentration. d. Na + will diffuse directly across the lipid bilayer. 2. Which of the following is located beneath the diaphragm in the right upper quadrant of the abdominal cavity? a. Liver c. Spleen b. Kidney d. Stomach 3. Which one of the following statements is false regarding active transport? a. The substance involved is generally soluble in lipid c. It always involves movement against the concentration gradient b. It involves the expenditure of cellular energy d. It uses carrier molecules 4. Which one of the following is an example of positive feedback? a. Body temperature rises—sweat glands release more sweat—the body cools c. Blood CO 2 rises—the brain triggers a deep breath of air— blood CO 2 falls b. Blood glucose level falls—the liver releases glucose—blood glucose rises d. Blood pressure drops—the heart begins to fail—blood pressure drops further 5. All epithelia that serve a protective function must contain goblet cells, since the mucus secreted by goblet cells helps prevent pathogens from entering the body. a. True b. False
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Supplemental Instruction Pavelescu | 2 6. The permeability of the cell membrane to various substances appears to be a function of many factors. These factors do not include: a. The presence of carrier molecules in the membrane c. The charge on the atom being transported b. The importance of the material to the cell d. The size of the molecule 7. Which of the following allows cells to undergo pseudopodial movement: a. Polymerization of tubilin c. Flagella b. Cilia d. Polymerization of actin 8. Which one of the following molecules can pass directly through a lipid bilayer? a. Glucose c. Protein b. Carbon dioxide (CO 2 ) d. Potassium ions (K + ) 9. As the number of cilia on the apical surface of an epithelial cell increases, the amount of surface area available for absorption will a. Increase c. Decrease b. Increase but not proportionally to the number of cilia present d. Not change 10. In the proper anatomical position, the thumbs point: a. Medially c. Superiorly b. Laterally d. Anteriorly 11. The term co-transporter refers to both symporters and antiporters. These are integral membrane proteins that work by which of the following mechanism? a.
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This note was uploaded on 10/03/2009 for the course BIO BIO 2870 taught by Professor Spranger during the Winter '08 term at Wayne State University.

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A&P-Practice Exam 1 w08 - Supplemental Instruction...

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