1. A group of scientists proposes an idea that a chemical compound will enable bean plants to grow faster. They grow one group of bean plants in the presence of the compound and another group in the absence of the compound. Then they write up a presentation about the experiment stating that the compound promotes plant growth. Which step is missing in their methodology? a hypothesis a control group data analysis a conclusion 2. Which of the following best describes the relationship between science and society? Science influences society but society does not influence science. Society influences science but science does not influence society. Science influences society and society influences science. Science and society interact but neither influences the other. 3. Which of the following is a characteristic that could be applied to both living and nonliving things? composed of cells that maintain homeostasis carry out metabolic reactions transfer genetic information to ospring contain mostly carbon, hydrogen, oxygen, and nitrogen 4. Name each subatomic particle, its charge, and its location in an atom. proton, positive charge, nucleus; neutron, positive charge, nucleus; electron, no charge, space around nucleus proton, positive charge, nucleus; neutron, no charge, nucleus; electron, negative charge, space around nucleus proton, no charge, nucleus; neutron, positive charge, nucleus; electron, negative charge, space around nucleus proton, no charge, nucleus; neutron, negative charge, space around nucleus; electron, no charge, nucleus 5. Explain how the isotopes of an element dier. They each have a dierent number of electrons in their outermost energy level. They each have a dierent number of protons in their nuclei. They each have a dierent number of neutrons in their nuclei. They each have a dierent charge. 6. Which of the following can be used to explain why water is able to dissolve many substances? Water has strong cohesive properties. Water has high heat capacity. Water is a polar molecule. Water has a neutral pH. 7. Which of the following has catalytic functions in a cell? proteins carbohydrates lipids nucleic acids 8. Which of the following is true of an exergonic chemical reaction? Reactants lose mass as products are formed. Bonds are broken in reactants and new bonds are formed in products. No activation energy is required to initiate it. The energy released is captured by a catalyst. 9. The following shows a graph of the energy changes taking place as a chemical reaction progresses. If an enzyme is added, which arrow’s magnitude will change? Will it increase or decrease? Arrow A will increase. Arrow A will decrease. Arrow B will decrease Arrow B will increase. 10. Which of the following is true of an enzyme? It catalyzes a series of reactions. It breaks down immediately following the reaction it catalyzes. It changes the amount of energy released at the end of a reaction. It binds a single set of substrates.
1. Conclusion 2. Science and society influences each other 3. Contain carbon etc 4. Number 2 5. Number 3 6. Number 1 or 4 7. Proteins 8. Number 2 9. Have to see graph 10. Number 4