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myfe-paper answer - Name: _ Class: _ Date: _ ID: A AP...

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Name: ______________________ Class: _________________ Date: _________ ID: A 1 AP Biology - Mid-Year Final Exam Multiple Choice Identify the choice that best completes the statement or answers the question. 1. In terms of the hierarchical organization of life, a bacterium is at the _____ level of organization, whereas a human is at the _____ level of organization. a) single-celled organism; multicellular organism b) single organelle; organism c) organelle; organ system d) single tissue; multicellular organism e) tissue; organism 2. The illustration above represents a) a computer simulation of the structure of a eukaryotic cell. b) a map of a network of protein interactions within a eukaryotic cell. c) an inventory of all the genes in a fruit fly. d) an X-ray diffraction image of the nucleus and cytoplasm of a eukaryotic cell. e) a computer generated map of the interaction of genes and cytoplasm in a prokaryotic cell. 3. Life is diverse. How many species are estimated to be presently on the earth? a) 1,800 b) 180,000 c) 1,800,000 d) 18,000,000 e) 180,000,000
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Name: ______________________ ID: A 2 4. Why is it important that an experiment include a control group? a) The control group is the group that the researcher is in control of; it is the group in which the researcher predetermines the nature of the results. b) The control group provides a reserve of experimental subjects. c) A control group is required for the development of an "if, then" statement. d) A control group assures that an experiment will be repeatable. e) Without a control group, there is no basis for knowing if a particular result is due to the variable being tested or to some other factor. 5. Calcium has an atomic number of 20 and an atomic mass of 40. Therefore, a calcium atom must have a) 20 protons. b) 40 electrons. c) 40 neutrons. d) A and B only e) A, B, and C 6. Which of the following best describes the relationship between the atoms described below? Atom 1 Atom 2 31 15 P 32 15 P a) They contain 31 and 32 electrons, respectively. b) They are both phosphorus cations. c) They are both phosphorus anions. d) They are both isotopes of phosphorus. e) They contain 31 and 32 protons, respectively. 7. Which of the following molecules contains the strongest polar covalent bond? a) H 2 b) O 2 c) CO 2 d) H 2 O e) CH 4
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Name: ______________________ ID: A 3 Refer to the following figure to answer the following questions. 8. The molecule shown here could be described in chemical symbols as a) CH 4 . b) H 2 O. c) C 2 H 3 . d) C 4 H 4 . e) CH 2 O. Refer to the following figure to answer the following questions. 9. In the methane molecule shown here, bonds have formed that include both the s orbital valence electrons of the hydrogen atoms and the p orbital valence electrons of the carbon. The electrons in these bonds are said to have a) double orbitals. b)
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myfe-paper answer - Name: _ Class: _ Date: _ ID: A AP...

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