Exam Structure and Scoring Criteria

  • Question Types:
      - Category Type Questions:
        - Pure memorization or recall.
        - Basic information questions such as definitions.
      - Scoring:
        - Two points awarded for memorization/recall questions.
        - Four points awarded for application and reasoning questions that require higher-order thinking skills.
  • Total Points:
      - 50 questions total, each contributing to 100 points.

Exam Content Breakdown

  • Weighting of Material:
      - Approximately 60% of the exam content will come from Unit 4.
      - Approximately 40% will cover material from all previous units.
  • Handwritten Notes:
      - One handwritten 3x5 note card is permitted (front and back).
      - Must not be typewritten or printed in small fonts; size five-point font is not acceptable.
      - The handwritten card aims to ensure equity among students.
      - Students should fill the card with topics, concepts, formulas, etc., that aid recall for the exam.

Exam Logistics

  • Calculator Usage:
      - No personal calculators allowed.
      - OSU-provided calculators will be available for use during the exam.
  • OSU ID Requirements:
      - Students must know their OSU ID number to complete answer sheets.
      - Without the ID number, exams cannot be matched to the students.
      - Ensure the OS ID number is bubbled in completely for credit.
  • Exam Date and Time:
      - Date: Next Wednesday, May 6.
      - Start Time: 8 AM, running until 9:50 AM.
      - Late arrivals will start the exam late, but must finish by 9:50 AM.

Assignment and Course Reminders

  • Assignments Deadline:
      - All assignments are due Friday at 5 PM, including ongoing homework assignments and the abstract writing assignment worth 50 points.
      - No submissions or assignments will be accepted during finals week.
  • Abstract Writing Assignment:
      - Students will be given a figure and must formulate a hypothetical abstract based on it.
      - The abstract involves not only interpretation but also analysis in an experimental context.
  • Virtual Class Information:
      - There will not be a regular in-class session on Wednesday.
      - However, office hours will still be available, and SI sessions will continue with potential extra credit.

Review Session Goals

  • Purpose is to review concepts and ensure understanding in preparation for the exam.
  • Focus on information related to photosynthesis and cellular respiration, linked to macro-level ecological concepts.

Important Concepts Related to Photosynthesis and Cellular Respiration

Photosynthesis Overview

  • Process Description:
      - Photosynthesis occurs when plants capture sunlight, converting solar energy into stored chemical energy in glucose.
  • Key Inputs:
      - Sunlight: Captured by leaves through chlorophyll.
      - Water: Absorbed by roots.
      - Carbon Dioxide (CO2): Taken in via stomata in leaves.
  • Key Outputs:
      - Oxygen (O2): Released through stomata after the process, essential for respiration.
      - Glucose: Stored energy from the process, with the formula C6H12O6C_6H_{12}O_6 for one molecule.

Cellular Respiration Overview

  • Concept Introduction:
      - Takes place in mitochondria, transforming glucose into usable energy (ATP) during different times of day.
  • Stages of Cellular Respiration:
      - Glycolysis: Occurs in cytosol, breaking glucose into pyruvate, yielding a small amount of ATP.
      - Krebs Cycle: Acetyl CoA generated, further processes pyruvate, and produces electron carriers (NADH, FADH2).
      - Electron Transport Chain (ETC): Final stage occurring in mitochondria, relying on oxygen as the final electron acceptor, crucial for ATP production.
  • Byproducts:
      - Carbon Dioxide (CO2): Released as a waste product of respiration.
      - Water (H2O): Formed through the combination of oxygen and electrons at the end of the ETC.
  • Importance of Oxygen:
      - Essential for efficient cellular respiration, without it cellular respiration halts, leading to anaerobic conditions and lactic acid production.

Ecological Implications

  • Energy Flow and Matter Cycles:
      - Energy flows through ecosystems beginning at producers and moving through various trophic levels, while matter remains recycled within the ecosystem.
  • Eutrophication:
      - An excess of nutrients (such as from runoff) leads to algal blooms, which can consume available oxygen, ultimately harming aquatic life.
  • Interdependence of Processes:
      - Photosynthesis and cellular respiration are interconnected; the outputs of one are the inputs of the other.

Conclusion and Final Remarks

  • Reinforce importance of being punctual and prepared for the exam while reviewing and comprehending the materials discussed herein.
  • Maintain focus on upcoming assignments, class structures, and exam logistics to optimize performance.