Chapter 6 a tour of the cell
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Chapter 6 A Tour of the Cell. “Faith is a fine invention when gentlemen can see, but microscopes are prudent in an emergency.” Emily Dickinson. Question ?. Can cells be seen with the naked eye?. Light Microscope - LM. Light Microscope. Occular Lens. Objective Lens.

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“Faith is a fine invention when gentlemen can see, but microscopes are prudent in an emergency.”Emily Dickinson


Question
Question ? microscopes are prudent in an emergency.”

  • Can cells be seen with the naked eye?


Light microscope lm
Light Microscope - LM microscopes are prudent in an emergency.”


Light microscope
Light Microscope microscopes are prudent in an emergency.”

Occular Lens

Objective Lens

Stage with specimen

Light Source


Magnification
Magnification microscopes are prudent in an emergency.”


Resolution
Resolution microscopes are prudent in an emergency.”


Limitations lm
Limitations - LM microscopes are prudent in an emergency.”


Electron microscopes
Electron Microscopes microscopes are prudent in an emergency.”


TEM microscopes are prudent in an emergency.”

SEM


Advantages
Advantages microscopes are prudent in an emergency.”


Disadvantages
Disadvantages microscopes are prudent in an emergency.”


Transmission electron microscope tem
Transmission Electron Microscope - TEM microscopes are prudent in an emergency.”


Tem limitations
TEM Limitations microscopes are prudent in an emergency.”


Scanning electron microscope sem
Scanning Electron Microscope - SEM microscopes are prudent in an emergency.”

  • Excellent views of surfaces.

  • Produces 3-D views.

  • Live specimens possible.


Limitations
Limitations microscopes are prudent in an emergency.”

  • Lower magnifications than the TEM.


Cell biology or cytology
Cell Biology or Cytology microscopes are prudent in an emergency.”

  • Cyto = cell - ology = study of

  • Should use observations from several types of microscopes to make a total picture of how a cell is put together.


Other tools for cytology
Other Tools for Cytology microscopes are prudent in an emergency.”


Cell fractionation
Cell Fractionation microscopes are prudent in an emergency.”


Cell fractionation1
Cell Fractionation microscopes are prudent in an emergency.”


Chromatography
Chromatography microscopes are prudent in an emergency.”


Electrophoresis
Electrophoresis microscopes are prudent in an emergency.”


History of cells
History of Cells microscopes are prudent in an emergency.”


History of cells1
History of Cells microscopes are prudent in an emergency.”

  • 1833 - Robert Brown, discovered the nucleus.

  • 1838 - M.J. Schleiden, all plants are made of cells.

  • 1839 - T. Schwann, all animals are made of cells.

  • 1840 - J.E. Purkinje, coined the term “protoplasm”.


Cell theory
Cell Theory microscopes are prudent in an emergency.”


R virchow
R. Virchow microscopes are prudent in an emergency.”


Types of cells
Types of Cells microscopes are prudent in an emergency.”

  • Prokaryotic –

  • Eukaryotic -.


Both have
Both Have: microscopes are prudent in an emergency.”


Prokaryotic microscopes are prudent in an emergency.”

Eukaryotic

Nucleus


Eukaryotic microscopes are prudent in an emergency.”

Prokaryotic


Why are cells so small
Why Are Cells So Small? microscopes are prudent in an emergency.”


Basic cell organization
Basic Cell Organization microscopes are prudent in an emergency.”


Animal microscopes are prudent in an emergency.”Cell


Plant Cell microscopes are prudent in an emergency.”


Membrane
Membrane microscopes are prudent in an emergency.”


Cytoplasm or cytosol
Cytoplasm or Cytosol microscopes are prudent in an emergency.”


Organelle
Organelle microscopes are prudent in an emergency.”


Organelles function
Organelles - function microscopes are prudent in an emergency.”


You must be able to
You must be able to: microscopes are prudent in an emergency.”


Nucleus
Nucleus microscopes are prudent in an emergency.”


Structure
Structure microscopes are prudent in an emergency.”


Nuclear membrane
Nuclear Membrane microscopes are prudent in an emergency.”


Nuclear pores
Nuclear Pores microscopes are prudent in an emergency.”


Nucleolus
Nucleolus microscopes are prudent in an emergency.”


Chromatin
Chromatin microscopes are prudent in an emergency.”

  • Chrom: colored

  • - tin: threads


Nucleus function
Nucleus - Function microscopes are prudent in an emergency.”


Ribosomes
Ribosomes microscopes are prudent in an emergency.”


Subunits
Subunits microscopes are prudent in an emergency.”


Locations
Locations microscopes are prudent in an emergency.”

  • Free in the cytoplasm -.

  • Membrane bound -


Endomembrane system
Endomembrane System microscopes are prudent in an emergency.”


Endomembrane system1
Endomembrane System microscopes are prudent in an emergency.”


Endoplasmic reticulum
Endoplasmic Reticulum microscopes are prudent in an emergency.”


Structure of er
Structure of ER microscopes are prudent in an emergency.”


Types of er
Types of ER microscopes are prudent in an emergency.”

  • Smooth ER:

  • Rough ER:


Golgi apparatus
Golgi Apparatus microscopes are prudent in an emergency.”


Structure has 2 faces
Structure Has 2 Faces microscopes are prudent in an emergency.”

  • Cis face –

  • Transface -


Function of golgi bodies
Function of Golgi Bodies microscopes are prudent in an emergency.”


Golgi vesicles
Golgi Vesicles microscopes are prudent in an emergency.”


Lysosome
Lysosome microscopes are prudent in an emergency.”


Function
Function microscopes are prudent in an emergency.”


Lysosomes
Lysosomes microscopes are prudent in an emergency.”


Vacuoles
Vacuoles microscopes are prudent in an emergency.”


Protists
Protists microscopes are prudent in an emergency.”


Plants
Plants microscopes are prudent in an emergency.”


Function1
Function microscopes are prudent in an emergency.”


Function plant vacuole
Function: Plant vacuole microscopes are prudent in an emergency.”


Microbodies
Microbodies microscopes are prudent in an emergency.”

  • Peroxisomes:

  • Glyoxysomes:


Enzymes in a crystal microscopes are prudent in an emergency.”


Mitochondria
Mitochondria microscopes are prudent in an emergency.”

  • .


Inner membrane
Inner Membrane microscopes are prudent in an emergency.”


Function2
Function microscopes are prudent in an emergency.”


Mitochondria1
Mitochondria microscopes are prudent in an emergency.”


Chloroplasts
Chloroplasts microscopes are prudent in an emergency.”


Inner or thylakoid membranes
Inner or Thylakoid Membranes microscopes are prudent in an emergency.”


Function3
Function microscopes are prudent in an emergency.”


Chloroplasts1
Chloroplasts microscopes are prudent in an emergency.”


Plastids
Plastids microscopes are prudent in an emergency.”


Examples
Examples microscopes are prudent in an emergency.”

  • Amyloplasts/ Leucoplasts –

  • Chromoplasts -


Ergastic materials
Ergastic Materials microscopes are prudent in an emergency.”


Cytoskeleton
Cytoskeleton microscopes are prudent in an emergency.”


Functions
Functions microscopes are prudent in an emergency.”


Components
Components microscopes are prudent in an emergency.”


Intermed. microscopes are prudent in an emergency.”

  • MicrotubulesMicrofilamentFilaments

  • Hollow Solid Cables

  • Tubulin Actin (Keratin)

  • Dynein

  • Cilia/Flagella Muscle Anchors

    Contraction Organelles

    Cell Division


Microtubules
Microtubules microscopes are prudent in an emergency.”


Tubulin
Tubulin microscopes are prudent in an emergency.”

  • .


Microtubules1
Microtubules microscopes are prudent in an emergency.”


Microtubules2
Microtubules microscopes are prudent in an emergency.”


Cilia and flagella
Cilia and Flagella microscopes are prudent in an emergency.”


Cilia and flagella1
Cilia and Flagella microscopes are prudent in an emergency.”


Dynein protein
Dynein Protein microscopes are prudent in an emergency.”


Centrioles
Centrioles microscopes are prudent in an emergency.”


Basal bodies
Basal Bodies microscopes are prudent in an emergency.”


Basal Body microscopes are prudent in an emergency.”


Mtocs
MTOCs microscopes are prudent in an emergency.”


Microfilaments
Microfilaments microscopes are prudent in an emergency.”


Microfilaments are stained green microscopes are prudent in an emergency.”.


Functions1
Functions microscopes are prudent in an emergency.”


Intermediate filaments
Intermediate Filaments microscopes are prudent in an emergency.”


Functions2
Functions microscopes are prudent in an emergency.”


Cytoskeleton1
Cytoskeleton microscopes are prudent in an emergency.”


Cell wall
Cell Wall microscopes are prudent in an emergency.”


Plant cell walls
Plant Cell Walls microscopes are prudent in an emergency.”


Primary wall
Primary Wall microscopes are prudent in an emergency.”


Secondary wall
Secondary Wall microscopes are prudent in an emergency.”


Middle lamella
Middle Lamella microscopes are prudent in an emergency.”


Cell walls
Cell Walls microscopes are prudent in an emergency.”

  • .


Extracellular matrix ecm
Extracellular Matrix - ECM microscopes are prudent in an emergency.”


Intercellular juctions
Intercellular Juctions microscopes are prudent in an emergency.”


Plasmodesmata
Plasmodesmata microscopes are prudent in an emergency.”


Intercellular juctions1
Intercellular Juctions microscopes are prudent in an emergency.”


Tight junctions
Tight Junctions microscopes are prudent in an emergency.”


Desmosomes
Desmosomes microscopes are prudent in an emergency.”


Gap junctions
Gap Junctions microscopes are prudent in an emergency.”


Summary
Summary microscopes are prudent in an emergency.”

  • Answer: Why is Life cellular and what are the factors that affect cell size?

  • Be able to identify cellular parts, their structure, and their functions.


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