2 Organelles - Endoplasmic Reticulum, Ribosomes, Golgi Body, Lysosomes and Mitochondria - Respiration
Page 1: Organelle Identification
Key Question: Identify which two organelles are found in plant cells but mostly not in animal cells.
Two Organelle Examples:
Chloroplasts
Cell Wall
Reasoning: Plants require these organelles for processes like photosynthesis (chloroplasts) and structural support (cell wall). Animals do not perform photosynthesis and have a different structural composition.
Page 2: Organelles Overview
Microtubules: Cytoskeletal element, important for cell shape and movement.
Cytoplasm: Jelly-like fluid, supports organelles, site of many cellular reactions.
Golgi Complex: Processes, packages, and distributes proteins and lipids.
Ribosome: Site of protein synthesis, can be free or attached to the endoplasmic reticulum.
Smooth Endoplasmic Reticulum: Synthesizes lipids, detoxifies substances.
Vacuole: Storage of substances, larger in plants for water regulation.
Centrioles: Involved in cell division in animal cells.
Nuclear membrane: Encases the nucleus, controls entry and exit.
Reticulum Types:
Rough Endoplasmic Reticulum (with ribosomes, protein synthesis)
Smooth Endoplasmic Reticulum (lipid synthesis)
Plasma Membrane: Regulates what enters and exits the cell.
Lysosomes: Contain digestive enzymes to break down waste.
Page 3: Additional Organelles
Intermediate Filaments: Provide structural support.
Chloroplasts: Site of photosynthesis; contains chlorophyll.
Peroxisome: Breaks down fatty acids and detoxifies.
Cell Membrane: Protects cell, allows selective permeability.
Cell Wall: Provides rigidity, found in plants but not animals.
Page 4: Learning Standards Overview
Focus: Life processes at a cellular level.
Achieved: Describe cellular life processes.
Merit: Explain depth of life processes.
Excellence: Comprehensive discussion of life processes.
Page 5: Organelles to Know
Endoplasmic Reticulum: Smooth and rough types.
Ribosomes: Protein synthesis.
Golgi Body: Packaging and distribution.
Lysosomes: Digestion and waste management.
Mitochondria: Energy production.
Page 6: Learning Outcomes
Goal: Describe organelle structure and function in plant/animal cells.
Endoplasmic Reticulum, Ribosomes, Golgi Body, Lysosomes.
Key Organelle Functions:
Cytoplasm: Site of Anaerobic Respiration.
Mitochondria: Site of Aerobic Respiration.
Page 7: Endoplasmic Reticulum Structure & Function
Structure: Network of membrane-enclosed tubules and sacs.
Location: Next to nucleus, occupies significant cell volume.
Types:
Rough ER:
Structure: Ribosome-studded, involved in protein synthesis.
Function: Synthesizes proteins with signal sequences.
Smooth ER:
Structure: Meshwork for increased surface area.
Function: Synthesizes lipids, metabolizes carbohydrates.
Page 8: Ribosomes
Structure: RNA and protein complexes, small and large subunits.
Location: Free in cytoplasm or attached to rough ER.
Function: Site for translation in protein synthesis, vital for cellular functions.
Page 9: Golgi Apparatus
Structure: Flat sacs (cisternae) stacked in a semicircular shape.
Location: In proximity to rough ER within the cytoplasm.
Function: Processes and sorts proteins received from the ER for transport.
Page 10: Lysosomes
Structure: Spherical sacs containing hydrolytic enzymes.
Location: Scattered in the cytoplasm.
Function: Breaks down nutrients and foreign materials.
Types:
Conventional (digestion)
Secretory (export of proteins).
Page 11: Organelles & Life Processes
Focus: Interrelation of organelles to support life processes (e.g., respiration).
Anaerobic Respiration: Cytoplasm as a site. Aerosolic Respiration: Mitochondria enable ATP production.
Purpose of Respiration: Energy extraction from glucose for cellular activities.
Page 12: Mitochondria Overview
Function: Breakdown glucose with oxygen to produce ATP through aerobic respiration.
ATP Uses: Fuels life processes necessary for survival.
Page 13: Mitochondria Structure for Function
Shape: Varies, enhancing local concentrations of reactants.
Compartmentalization: Inner and outer membranes create ideal environments for ATP production.
Page 14: Membrane Functionality
Outer Membrane: Semi-permeable, allows specific molecules.
Inner Membrane: Folds (cristae) increase surface area for ATP synthesis enzymes.
Page 15: Enzymatic Activity in Mitochondria
Matrix: Contains enzymes aiding in the breakdown of pyruvate and citric acid cycle.
Enzyme roles crucial for ATP production efficiency.
Page 16: ATP Production Process
Glycolysis: First stage of respiration, necessary for ATP generation.
Outcome: Produces 2 ATP without needing oxygen.
Page 17: Anaerobic Respiration Details
Context: Used when oxygen supply is low but energy demand is high.
Process: Glucose breaks down without oxygen, producing 2 ATP and lactic acid (in muscles).
Page 18: Aerobic Respiration Summary
Importance: Primary energy source; 36 ATP produced from glucose with oxygen.
Comparison: Aerobic vs. Anaerobic—more efficient energy yield.
Page 19: ATP Production Overview
Review of ATP generation stages:
Glycolysis
Pyruvate Oxidation
Citric Acid Cycle
Oxidative Phosphorylation
Page 20: Understanding Mitochondrial Structure
Key Features: Increased surface area for reactions, compartmentalization for optimal conditions.
Page 21: Mitochondrial Functions and Benefits
Cristae vs Matrix: Distinguish roles and advantages in ATP production.
Page 22: Review Questions and Answers
Focus on key organelle functions and importance in life processes.
Page 23: Summary of Ribosomes
Ribosomes' critical role in protein synthesis and insertion into ER proximity.
Page 24: Golgi Body Function
Golgi body processes and packages proteins, critical for secretion functions.
Page 25: Lysosomes' Role in Cells
Importance of lysosome functions and consequences of lysosome rupture.
Page 26: Achieved Learning Outcomes
Understand structure and function of key organelles in life processes.