SUBMIT completed ANSWER SHEET to Assignment Folder Final Exam SUBMIT Essay Answers to Turnitin.com
IMPORTANT: STUDENT PLEASE ANSWER ALL QUESTIONS IN THE ANSWER SHEET DOCUMENT AND SUBMIT THE ANSWER SHEET TO YOUR ASSIGNMENTS FOLDER. FOLLOW ALL INSTRUCTIONS CAREFULLY.
DO **NOT**SUBMIT THIS TEST DOCUMENT FILE TO YOUR INSTRUCTOR.
GENERAL INSTRUCTIONS: This final examination is worth 200 points. There are 6 sections: Multiple choice (57 points), Fill-in-the-blank (15 points), Matching, (24 points), Short answer (24 points), Essay (80 points) and Bonus point (10 points) sections. Read all instructions carefully. *Do not leave any required questions blank. Make your best guesses.* **When answering questions for all sections, use the accompanying Answer Sheet. Submit the Answer Sheet document to your Assignment Folder on or before the due date.**
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MULTIPLE CHOICE SECTION INSTRUCTIONS: Read all instructions carefully. Please answer all questions. Each question is worth 1 point. The Multiple Choice section is worth 57 points. **Do not enter your answers here.** Type in the letter you select as the best answer on the Answer Sheet provided by your instructor. 1. In the scientific method, a hypothesis ____________.
A) is a statement of fact B) can only be tested once C) is usually proven to be correct D) is a proposed explanation based on observations E) none of the above
2. What is the correct sequence of steps in the scientific method?
I. State the problem II. Analyze and interpret the data III. Develop a hypothesis IV. Share the results with other scientists V. Design and perform an experiment to test the hypothesis
A) III → I → V → II → IV B) I → III → II → IV → V C) V →IV → III → II → I D) I → III → V → II → IV E) V → II → I → III → IV 3. Which of these would be a valid scientific hypothesis?
A) Earthworms and humans share a common genetic code. B) Humans are controlled by forces beyond our understanding. C) Humans should help in the conservation of plant species. D) Human history is determined by a series of supernatural events.
4. You have formulated a hypothesis that “light is necessary for seed
germination.” To test your hypothesis, one set of maple seeds is placed in light with warm temperatures and adequate moisture. Another set of identical maple seeds is placed in the dark under the same set of conditions. The independent variable (IV) and the control in the experiment are:
A) IV: light; control: darkness B) IV: germination at warm temperatures; control: germination in the light C) IV: adequate moisture; control: light D) IV: seeds in the dark; control: rate of germination E) IV: light; control: germination rate
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5. To test a hypothesis about a given variable, experimental and control groups are tested in parallel. Which of the following best explains the dual experiments? A) In the control and experimental groups, two different variables are altered. B) In the experimental group, a chosen variable is altered in a known way. In the
control group, that chosen variable is not altered so a comparison can be made.
C) In the experimental group, a chosen variable plus all other variables are altered. In the control group, the chosen variable is altered; however, all other variables are held constant.
D) In the experimental group, that chosen variable is not altered so a comparison can be made. In the control group, a chosen variable is altered in a known way.
E) Control and experimental group experiments are identical and run in parallel to get repeatable results.
6. Which of the following can be considered definitions of “theory”?
A) A theory can be an explanation of scientific laws B) A theory is a widely accepted integrated explanation of numerous hypotheses,
each supported by a large body of observations and experiments C) A theory is a condensation and simplification of many data that previously
appeared unrelated D) A theory is a broad explanation that is supported by a great deal of evidence
and continues to inspire productive research. E) All of the above
7. Which of the following structures can perform all the activities required for life?
A) organelles B) nuclei C) plasma membrane D) cells E) DNA molecules
8. Relative to a pH of 6, a pH of 3 has a ______.
A) 300 times lower H+ concentration B) 1,000 times lower H+ concentration C) 3 times higher H+ concentration D) 1,000 times higher H+ concentration E) 3 times lower H+ concentration
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Use the following information to answer questions 9-10 below.
A group of medical researchers recently investigated the effects of Drug X on lowering blood pressure in a group of hypertensive middle-aged women. The researchers did the following experiment and obtained the indicated results: One group of 250 women took a tablet containing Drug X for 3 weeks – 195 of these women decreased their blood pressure by at least 10% (three women from this group dropped out of the study). Another group of 250 women was given a tablet with no added Drug X for 3 weeks – 67 of these women decreased their blood pressure by at least 10% (two women from this group dropped out of the study).
9. Which of the following is the most reasonable and accurate conclusion based on the results obtained in this experiment? A) Drug X is good for hypertensive women B) Drug X is good for both men and women C) Hypertensive women receiving Drug X for 3 weeks may show a decrease in
blood pressure D) Hypertensive women receiving Drug X for 3 weeks may show an increase in
blood pressure E) Drug X has no effect on blood pressure
10. Which of the following was the control group in this experiment?
A) the group of participants that received tablets containing Drug X B) the group of participants that received tablets that did not contain Drug X C) the number of participants in each group at the beginning of the experiment D) the number of participants in each group at the end of the experiment E) the amount of Drug X contained in the tablet
11. A substrate binds to an enzyme by interacting with amino acids in the_____.
A) dehydration reaction B) binding site C) hydrolysis site D) denaturation portal
12. What are the products in the following chemical reaction?
C6H12O6 + 6 H2O + 6 O2 6 CO2 + 12 H2O A) CO2 and H2O B) C6H12O6, H2O, and O2 C) O2 only D) C6H12O6, H2O, O2, CO2, and H2O
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13. Which component of the following reaction is the substrate, and which is the enzyme? lactose + lactase + water lactase + glucose + galactose A) glucose + galactose is the substrate, and water is the enzyme B) water is the substrate, and lactose is the enzyme C) glucose is the substrate, and water is the enzyme D) lactose is the substrate, and lactase is the enzyme E) lactase is the substrate, and glucose + galactose is the enzyme
14. In a cell, the endomembrane system includes ______. A) ribosomes, lysosomes, vacuoles, and the endoplasmic reticulum B) Golgi apparatus, ribosomes, vacuoles, and the endoplasmic reticulum C) lysosomes, Golgi apparatus, ribosomes, and the endoplasmic reticulum D) the endoplasmic reticulum, Golgi apparatus, and vesicles
15. If one strand of a DNA double helix has the sequence TGACTCG, what will
be the sequence of the complementary DNA strand? A) GACGTCA B) ACAUGAC C) ACTGAGC D) GUCAUGA E) impossible to tell from the information provided.
16. One difference between eukaryotic and prokaryotic cells is that eukaryotic
cells ______. A) are found in animals, while plant cells are comprised of prokaryotic cells. B) have a plasma membrane, which is lacking in prokaryotic cells. C) have a nucleoid region, which is lacking in prokaryotic cells. D) have membrane-enclosed organelles, which are lacking in prokaryotic cells.
17. Which of the following statements best describes the relationship between photosynthesis and respiration? A) Photosynthesis occurs only in plants and respiration occurs only in animals. B) Respiration is anabolic and photosynthesis is catabolic. C) Photosynthesis stores energy in complex organic molecules, while
respiration releases it. D) ATP molecules are produced in photosynthesis and used up in respiration. E) Photosynthesis produces energy, respiration uses energy.
18. What compound directly provides energy for cellular work?
A) C6H12O6 B) ATP C) glucose D) fat
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19. If placed in tap water, an animal cell will undergo lysis, whereas a plant cell will not. What accounts for this difference? A) the relative impermeability of the plant cell membrane to water B) expulsion of water by the plant cell’s central vacuole C) the relative inelasticity and strength of the plant cell wall D) the relative impermeability of the plant’s nuclear membrane to water
20. Plant cells ______. A) do not need chloroplasts because their mitochondria meet their energy needs B) are prokaryotic because they have cell walls C) use carbon dioxide but do not use oxygen D) do not need mitochondria because their chloroplasts meet their energy needs E) have chloroplasts and mitochondria
