Example Questions for Lecture Exam #1 PSIO 201 The following questions are intended to give students a general idea of the type of questions they will see on the exam. These questions do not cover all of the material that students need to know for the exam. All questions are multiple choice; select the single best answer for each question 1. Following is a list of several of the levels of biological organization that make up a complex living system, including humans. 1. tissue 2. cell 3 organ 4. molecule 5. organism 6. organ system The correct order, from the simplest to the most complex, would be a. 1, 3, 2, 4, 6, 5 b. 4, 2, 1, 3, 6, 5 c. 6, 5, 1, 2, 3, 4 d. 5, 6, 3, 1, 2, 4 e. 2, 4, 1, 3, 6, 5 2. Each of the following is an example of negative feedback except one. Identify the exception. a. increased pressure in the aorta triggers mechanisms to lower blood pressure. b. a rise in blood calcium levels causes the release of a hormone to lower blood calcium levels. c. a rise in estrogen during the menstrual cycle causes an increase in the number of progesterone receptors in the uterus. d. increased blood sugar stimulates the release of a hormone from the pancreas that stimulates the liver to remove sugar from the blood. e. a decrease in body temperature triggers a neural response that initiates physiological changes to increase body temperature. 3. Enzymes a. are proteins b. function as biological catalysts c. accelerate the rate of a chemical reaction by lowering the activation energy required for that reaction d. all of the above e. none of the above4. The molecular weight of glucose is 180. If 360 grams of glucose are dissolved in 2 liters of water, the molar concentration of the resulting solution would be a. 0.25 molar b. 1 millimolar c. 0.5 molar d. 1 molar e. 0.5 x 10-1 molar 5. Phospholipids and integral membrane proteins a. are high molecular weight sequences of identical, molecular “building blocks” b. are completely insoluble in water c. are freely soluble in water d. are structures that contain both polar (hydrophilic) and non-polar (lipophilic) regions e. are comprised entirely of carbon and hydrogen linked by ionic bonds 6. Two solutions are separated by an ideal semipermeable membrane (i.e., permeable to H2O, impermeable to solute). Solution A is 0.05 M glucose and solution B is 1 M glucose. Under these circumstances, you would expect a. net movement of water from solution A to solution B b. net movement of water from solution B to solution A c. net movement of glucose from solution B to solution A d. net movement of glucose from solution A to solution B e. no net movement of either water or solute 7. Microtubules are a. comprised of actin microfilaments b. the structural basis of mitochondria c. comprise the nuclear membrane d. non-membranous organelles e. none of the above 8. Oxidative metabolism (also called ‘oxidative phosphorylation’) a. is the most efficient cellular mechanism to produce ATP b. occurs within the cytoplasm c. consumes CO2 d. produces lactate e. produces O29. The Golgi apparatus is a __________ (M, membranous; N, non-membranous) organelle associated with _________ (D, degradation; P, packaging) of _____________ (L, lipid; P, protein) a. N, D, P b. M, D, P c. M, P, P d. M, P, L e. N, P, L 10. A drug that blocks translation would prevent a. DNA synthesis b. mRNA synthesis c. protein synthesis KEY: 1b, 2c, 3d, 4d, 5d, 6a, 7d, 8a, 9c,