Organelle Operation Guided Notes
Organelle Operation | Guided Notes
Cell Biology • Animal Cell Internal Structures & Functions
Name: _____________________
Date: ___________
Class/Period: ___________
Score: _____/25
Core Concept: An organelle is a membrane-bound structure that performs a specific function inside a cell. Animal cells are eukaryotic, meaning genetic material is contained inside a defined nucleus. The jelly-like fluid bathing all organelles is called cytoplasm.
01
Cell Membrane (Plasma Membrane)
Outer Barrier & Gatekeeper
Structure: Composed of a flexible double layer called the phospholipid ____________________ with embedded transport ____________________ and cholesterol molecules.
Key Function: Controls the entry and exit of molecules, maintaining internal balance (homeo____________________). It is described as selectively ____________________, meaning only certain substances can freely pass.
City Analogy
The Security Gate / Border Patrol because it:
02
The Nucleus (Including Nucleolus)
Command & Control Center
Structure: Enclosed by a double membrane called the nuclear ____________________ containing tiny nuclear pores. Houses chromatin and a dense center called the nucleol____________________.
Key Function: Stores genetic blueprints in the form of ___________ (DNA) and orchestrates all cellular metabolism. The dense nucleolus is specifically responsible for assembling ribo____________________.
City Analogy
The City Hall / CEO Headquarters because it:
03
Mitochondria (Singular: Mitochondrion)
Energy Generator (ATP)
Structure: Rod-shaped with a smooth outer membrane and an intricately folded inner membrane called cris____________________, maximizing surface area for chemical reactions.
Key Function: Performs cellular ____________________, converting glucose and oxygen into usable cellular energy currency known as ______ (ATP).
Reaction: Glucose + Oxygen → Carbon Dioxide + Water + __________ (Energy)
City Analogy
The Power Plant because it:
Check for Understanding • Critical Analysis
Human muscle cells contain thousands of mitochondria per cell, while skin cells contain far fewer. Explain why muscle cells require this structural difference:
Unit: Cell Structure & Physiology Page 1 of 2 • Turn over for Protein Assembly & Waste Management
Organelle Operation | Part II: Assembly & Disposal
Ribosomes • Endoplasmic Reticulum • Golgi Bodies • Lysosomes
Section 2: Manufacturing & Recycling
04
Ribosomes (The Protein Synthesizers)
Construction Units
Structure: Tiny, non-membrane-bound complexes of rRNA and proteins. May float free in cytoplasm or attach to the Endoplasmic ____________________.
Key Function: Translates genetic instructions (mRNA) into polypeptide chains to synthesize vital prote____________________.
City Analogy: Factory Workers
They follow blueprints to make:
05
Endoplasmic Reticulum (ER)
Internal Highway & Factory
Rough ER
Studded with ribo___________. Folds proteins and packages them into transport vesi___________.
Smooth ER
Lacks ribosomes. Synthesizes lip___________ (fats/phospholipids) and detoxifies poisons/chemicals.
City Analogy: Highway / Conveyor
Transports materials through:
06
Golgi Bodies (Golgi Apparatus)
Packaging & Shipping Hub
Structure: A series of flattened membranous sacs called cisternae (resembles stacked pita bread).
Key Function: Receives vesicles from the ER. It inspects, modi__________, sor__________, and tags proteins with chemical labels before shipping them to cellular destinations or cell export.
City Analogy: Post Office / UPS
Prepares packages for delivery by:
07
Lysosomes (The Recycling Crew)
Digestive & Clean-Up Unit
Structure: Spherical membranous sacs packed with powerful hydrolytic digestive enzy____________________.
Key Function: Breaks down incoming food molecules, neutralizes foreign bacteria/viruses, and recycles damaged organ____________________ through a process known as autophagy.
City Analogy: Sanitation / Recycling
Maintains cleanliness by:
Activity A: Trace the Secretory Pathway (Order 1 to 5)
How animal cells manufacture & export proteins
Nucleus
DNA transcribed to mRNA recipe
Step [ ]
Ribosome / Rough ER
Translates mRNA & packages into vesicle
Step [ ]
Golgi Body
Modifies, folds, and sorts the protein
Step [ ]
Secretory Vesicle
Transports product to outer perimeter
Step [ ]
Cell Membrane
Fuses & exports via exocytosis
Step [ ]
Activity B: Organelle Malfunction Diagnostic
Case 1: A cell accumulates toxic cellular debris and damaged mitochondria that fail to be degraded. Which organelle has malfunctioned?
Organelle: ________________________
Case 2: A white blood cell cannot produce antibodies (specialized defense proteins) to fight an infection. Which two organelles are directly impaired?
Organelles: 1. ______________ 2. ______________
Animal Cell Organelle Mastery Page 2 of 2 • End of Guided Notes
