Biology 1020 Exam 1 Practice Test

Biology 1020 Exam 1 Practice Test - Biology 1020 Exam 1...

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Biology 1020 Exam 1 Practice Test Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. These organic molecules have a chemical formula that is at or close to a multiple of (CH 2 O). A) carbohydrates D) nucleic acids B) lipids E) none of the above C) proteins (polypeptides) 2. Two isotopes of the same element differ in the number of: A) both electrons and neutrons. D) neutrons. B) protons. E) both protons and electrons. C) both protons and neutrons. 3. The sum of all chemical reactions and energy transformations that take place in living organisms is called: A) stimulus-response. D) metabolism. B) homeostasis. E) cell theory. C) specific epithet. 4. Which of the following is NOT true about a scientific hypothesis? A) A hypothesis provides a model that explains existing observations. B) A hypothesis makes predictions that are testable. C) A hypothesis becomes considered a scientific law when proven true. D) A hypothesis can be supported by new experimental evidence. E) A hypothesis may be called a theory if it links together a large body of observations. 5. These organic molecules are composed of amino acid monomers. A) carbohydrates D) nucleic acids B) lipids E) none of the above C) proteins (polypeptides) 6. The formation of a disulfide bridge between cysteines in a single polypeptide chain results in a/an ____ bond and is considered part of the ___ structure. A) covalent; primary D) ionic; quaternary B) ionic; secondary E) covalent; tertiary C) hydrogen; secondary 7. Related genera are grouped into a/an:
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D) family B) class E) species C) phylum 8. A doctor is performing an experiment to test the hypothesis that aspirin reduces the risk of heart attacks in people with high blood pressure. Each member of her experimental group of 100 people with high blood pressure is taking an aspirin once a day. Which of the following would make the best control group for her experiment? A) 100 people without high blood pressure taking aspirin each day B) 100 people with high blood pressure taking aspirin each day, and who do not know for sure what they are taking C) 100 people with high blood pressure taking no pills during the experiment D) 100 people without high blood pressure taking a pill with inactive ingredients each day, and who do not know for sure what they are taking E) 100 people with high blood pressure taking a pill with inactive ingredients each day, and who do not know for sure what they are taking 9. The type of bond depicted between carbon 1 and carbon 2 in the figure below is: A) a hydrogen bond D) an ionic bond B) a covalent bond E) a carbon bond C) a hydrophobic bond 10. These organic molecules have phosphodiester linkages between monomers. A) carbohydrates
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Biology 1020 Exam 1 Practice Test - Biology 1020 Exam 1...

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