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56 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
Person to first observe cells
Robert Hook, 1665
Person to term "animalcules"
Anton van Leeuwenhoek
Who proposed "Cell Theory"
Schleiden and Schwan

Mathias Schleiden (1838)
Theodore Schwann (1839)
Cell Theory is...
1. All organisms are composed of cells.
2. Cells are the smallest living things
3.Cells arise only from pre-existing cells
Where is the DNA located in a Prokaryote?
Nucleoid
Person to first observe cells
Robert Hook, 1665
Person to term "animalcules"
Anton van Leeuwenhoek
Who proposed "Cell Theory"
Schleiden and Schwan

Mathias Schleiden (1838)
Theodore Schwann (1839)
Cell Theory is...
1. All organisms are composed of cells.
2. Cells are the smallest living things
3.Cells arise only from pre-existing cells
Where is the DNA located in a Prokaryote?
Nucleoid
Where is the DNA located in Eukaryote?
Nucleus
A semifluid matrix?
Cytoplasm
Do prokaryote have organelles
No
What is an organelle?
Specialized membrane bound structures that perform specific tasks
What do ALL cells have in common?
1. Genetic material-in a nucleoid or nucleus
2. Cytoplasm-a semifluid matrix
3. Plasma membrane-a phospholipid membrane
Two types of Prokaryotes?
Archaea
Bacteria
4 Types of Eukaryotes?
1. Plants
2. Animals
3. Fungi-molds, mushrooms, yeasts
4. Protists-single celled orgnaisms
How do prokaryotes reproduce?
Binary fission-a simple splitting of the cell into 2 equal parts
The plasma membrane is...?
a phospholipid bilayer that encloses and separates its contents from its surroundings
_________ proteins help molecules move across the plasma membrane
Transport
Define prokaryote
simple organisms consisting of cytoplasm surrounded by a plasma membrane and encased within a rigid cell wall with no distinct internal compartments
What is the cell wall made of in bacteria
Peptidoglycan
Gram positive means?
thick cell wall that retains a violet dye appearing puple under a microscope
Gram negative means?
bacteria that have evolved to a more complex, multilayered cell wall that does not retain the purple dye. They appear red after staining
Define flagella
long, threadlike structure protruding from the surface that are used in locomotion
Do prokaryotes have ribosomes?
Yes. Ribosomes are used in protein synthesis
Define fimbriae
Hollow, hair like structures used for attatchment
Define Pili
Hair like structures used in the transfer of genetic information
Do archae have peptidoglycan?
No
Do animal cells have cell walls?
No
Define prokaryote
simple organisms consisting of cytoplasm surrounded by a plasma membrane and encased within a rigid cell wall with no distinct internal compartments
What is the cell wall made of in bacteria
Peptidoglycan
Gram positive means?
thick cell wall that retains a violet dye appearing puple under a microscope
Gram negative means?
bacteria that have evolved to a more complex, multilayered cell wall that does not retain the purple dye. They appear red after staining
Define flagella
long, threadlike structure protruding from the surface that are used in locomotion
Plasma membrane
Phospholipid bilayer with embedded proteins
Regulates what passes into and out of the cell. Cell-to-cell recognition; connections and adhesion;cell communication
Nucleus
Spherical, contains chromosomes and is surrounded by a double membrane called a nuclear envelope composed of 2 phospholipid bilayers
Contains genetic information in the form of multiple, linear chromosomes.
Chromosomes
Long threads of DNA that form a complex with protein
Contain heredity information used to direct the systhesis of protein
Ribosomes
Small, complex assemblies of protein and RNA. 2 subunits
Protein Synthesis
Rough endoplasmic reticulum (RER)
A network of internal membranous channels throughout the cytoplasm. Attatched ribosomes give a rough appearence.
Synthesis of proteins
Smooth endoplasmic reticulum (SER)
Network of membranous channels throughtout the cytoplasm. Few if any ribosomes attatched.
Synthesis of phospholipids, calcium storage, detoxification of foreign substances
Golgi Apparatus
Flattened stacks of interconnected membranes
Inspects, packages, and distributes materials to different parts of the cell. Synthesis of cell wall compontents
Lysosomes
Membrane bound vesicles derived from the golgi apparatus containing digestive enzymes.
Break down macromolecules, worn out ogranells, and cellular debris.
Mitochondria
Present in all eukaryotes.
Energy production in the form of ATP.
Chloroplasts
Present in PLANTS ONLY. Contains chlorophyll.
Photosynthesis
Thylakoids
membranous sacs within chlorpolasts stacted together with other thylakoids
Photosynthesis
Grana
Stacks of thylakoids
Photosynthesis
Stroma
Fluid that fills chloroplasts
Photosynthesis
Chlorophyll
Green pigments in chloroplasts
Photosynthesis
Cytoskeleton
Network of protein fibers found in all eukaryotic cells.
Supports the shape of the cell, keeps organelles in fixed locations. The "scaffolding" of the cell.
Mitochondria
Surrounded by 2 membranes. Smooth outer layer, folded inner membrane with layers called cristae.
Energy production
Cristae
folded inner layers of a mitochondria
Energy production
Vacuoles-plants
large central area.
Used for water storage and other molecules such as sugar, ions, pigments, and waste products.
Vacuoles-animals
Contractile vacuole, regular vacuole
Contractile vacuole: acts as a pump for some portists to propel themselves. Regular vacuole acts as storage for some animal cells.
Flagella
Long filamentous appendages found in some animal and protists-rotary movement.
Cell movement
Cilia
Aranged on the rows on the surface of a eukaryotic cell
Cell movement