100_sample_exams.pdf[1]

100_sample_exams.pdf[1] - B io[o3.1 t Oo - & etnn * t...

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Bio[o3.1 tOo - &etnn * t PAGE 1 ..-- 1. Which of the following statements is TRUE of smallpox? a) Smallpox is usually sexually transmitted. b) A certain percentage of people who are vaccinated against smallpox will develop the disease as a result of the vaccine, or perhaps will die as a resuit of the vaccine. c) It is hard to know whether someone has already had smallpox. d) Smallpox is caused by a bacterium. e) more than one of the above is correct 2. A hypothesis is: a) the result of an experiment b) a scientffic conclusion c) based on a theory d) a suggested explanation of something e) both c) and d) are correct 3. Which of the following represents the correct organizational sequence (from smallest to largest): a) protein, nerve cell, nerve tissue, brain, nervous system b) brain, nerve tissue, population of cells, organ system c) organ, cell, tissue, organ systenr" organism d) nerve tissue, nerve cell, organ systern, spinal cord, brain e) cell, molecule, tissue, organ system 4. This is the smallest unit that can efst as a separate, living entity: a) atom b) embryo c) cell d) organ e) tissue 5. As a result of eating bananas, your blood potassium level rises. What should happen as a homeostatic response? a) The blood potassium level should level offat its new value. b) The blood potassium level should continue to rise. c) The blood potassium level should return to its former value. 6. If you skip a meal, which of the following would occur? a) Glucagon levels will rise. b) Insulin levels will rise. c) Both a) and b) d) Neither a) nor b) 7. Which of the following is TRUE of untreated Type I diabetes? a) Insulin is produced, but target cells do not respond. b) It usually occurs in children. c) Blood sugar levels tend to be very low. d) more than one of the above is correct 8. Which specific molecule is known as "blood sugar"? a) lactose b) starch c) deoxyribose d) glucose e) fructose 9. The nucleus of an atom contains: a) neutrons and electrons b) protons and electrons c) neutrons only d) neutrons, protons, and electrons e) neutrons and protons 10. Which of the following statements about isotopes is TRUE? a) Atoms with different atomic numbers are isotopes of each other. b) Isotopes of an element must have different numbers of electrons.
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PAGE 2 Chromium (Cr) is an essential nutrient found in broccoli, mushlooms, apples, and Brewer's yeast. Its atomic number is 24, and its atomic mass is 5?. I 1. How many electrons does a neutral chromium atom have? a) 8 b) 12 c) 52 d)26 e)24 12. Ctromium usually exists as the Ct'* ion. How did the ion get a +3 charge? a) It gained 3 protons.
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100_sample_exams.pdf[1] - B io[o3.1 t Oo - & etnn * t...

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