BIO 103 Chapter 6, 7, & 8 Exam Questions with Verified Solutions

BIO 103 Chapter 6, 7, & 8 Exam Questions with Verified Solutions What is the definition of energy in the context of science? a. The ability to change something b. A type of chemical reaction c. The capacity to do work d. A measure of temperature At what conditions do enzymes work most effectively? a. Only at extreme temperatures and pH levels b. At all conditions, regardless of temperature and pH c. At a specific pH and temperature d. Only at high temperatures and acidic conditions What are a series of sequential chemical reactions that are maintained in the cell? a. Energy steps b. Chemical reactions c. Biochemical pathways d. Metabolic cycles What type of chemical processes involve a gain or loss of electrons? a. Atomic reactions b. Molecular changes c. Oxidation and reduction reactions d. Nuclear transformations What type of reactions release free energy and occur spontaneously? a. Endergonic reactions b. Activation reactions c. Thermodynamic reactions d. Exergonic reactions What type of biological molecules speed up metabolic reactions in an organism? a. Proteins b. Carbohydrates c. Lipids d. Enzymes What do enzymes have a specific interaction with? a. Products b. Reactants c. Substrates