Bio 107 Midterm 1 Review Questions with Correct Answers Graded A+

Bio 107 Midterm 1 Review Questions with Correct Answers Graded A+ What does DNA stand for? Deoxyribonucleic acid In what way is artificial selection different from natural selection? In artificial selection, human preference is the selecting force; in natural selection, environmental conditions are the selecting forces. Which of the following is what scientists mean when they use the term theory? A set of findings that are supported by repeated testing. Who is responsible for the theory of evolution? Alfred Wallace, Charles Darwin Which of the following is the best way to make a hypothesis? Making observations about a pattern and then coming up with a prediction as to why that pattern is occurring. What is the MAJOR difference between prokaryotes and eukaryotes? Membrane bound organelles Which of the following atoms has the greatest impact on biology due to its electronegativity? Oxygen Water plays a critical role in life, allowing many bonds to occur because of the partial positive and partial negative charges on each atom in the molecule. Which interaction is most often made with the partially negative charge on oxygen in water? Hydrogen bond In chemical reaction such as Na+Cl NaCl, what type of reaction and bond is described? Ionic, Endothermic/Endergonic Carbon forms bonds with a maximum of how many other atoms ? 4 Which of the following best describes why ionic molecules dissolve and dissociate in water? Water is a polar, Covalently bounded substance Which four elements make up 96% of matter found in living organisms? Hydrogen, Carbon, Oxygen,Nitrogen How do hydrophobic molecules react with water? Repelled by