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Subcellular Structure
- Bacteria have cell walls containing peptidogylcan. Some bacteria are covered by a capsule that helps them to evade the immune system.
- The genetic material in bacteria found in the nucleoid region. Some bacteria also have small rings of DNA called plasmids, which contain additional genes.
- Pili are projections from the bacterial surface. Sex pili transfer DNA from one cell to another.
- Flagella provide a means of motility in some prokaryotes.
- Eukaryotic cells contain membrane bound organelles including rough and smooth endoplasmic reticulum, Golgi apparatus, mitochondria, lysosomes, peroxisomes and ribosomes.
- Eukaryotic DNA is organized as chromosomes bound by histone proteins and is located within a membrane bound nucleus. The nucleolus is the site of ribosomal RNA synthesis.
- The cytoskeleton is a network of filaments composed of microtubules, microfilaments and intermediate filaments.
- Animal cells do not have cell walls. The primary cell walls in plants contain cellulose. Plants may also have a secondary cell wall composed of both cellulose and lignin.
- Plant cells have a large central vacuole and organelles called plastids, including chloroplasts, the site of photosynthesis.
Subcellular Structure
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
- Intro
- Prokaryotic Cells
- Eukaryotic Cells (Animal Cell Structure)
- Plasma Membrane
- Microvilli
- Nucleus
- Nucleolus
- Ribosomes: Free and Bound
- Rough Endoplasmic Reticulum (RER)
- Eukaryotic Cells (Animal Cell Structure), cont.
- Cytoskeleton
- Cytoplasm and Cytosol
- Microtubules: Centrioles, Spindel Fibers, Clagell, Cillia
- Microfilaments
- Intermediate Filaments and Kerotin
- Eukaryotic Cells (Plant Cell Structure)
- Plasma Membrane, Primary Cell Wall, and Secondary Cell Wall
- Middle Lamella
- Central Cauole
- Plastids: Leucoplasts, Chromoplasts, Chrloroplasts
- Chloroplasts
- Example 1: Structures and Functions
- Example 2: Cell Walls
- Example 3: Cytoskeleton
- Example 4: Antibiotics and the Endosymbiosis Theory
































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