1. Multiple Choice: Which of the following cellular processes can occur in the absence of oxygen? a) Glycolysis b) Krebs cycle c) Electron transport chain d) Fermentation Correct Answer: a) Glycolysis Rationale: Glycolysis is the metabolic pathway that converts glucose into pyruvate, releasing energy and producing ATP. It is an anaerobic process, meaning it does not require oxygen. 2. Fill-in-the-Blank: The __________ is the basic structural and functional unit of all living organisms. Correct Answer: Cell Rationale: The cell is the smallest unit that can carry out all the processes necessary for life, making it the fundamental building block of all living things. 3. True/False: Mitochondria are found only in animal cells. Correct Answer: False Rationale: Mitochondria, known as the powerhouses of the cell, are present in both animal and plant cells. They are responsible for producing the energy currency of the cell, ATP, through