GENBIOLOGY Cell Theory Flashcards
Cell Theory
Theories that explain cells in every microorganism.
Cell Theory
are the primary building blocks of life.
Cell
Basic unit of life
Cell
There are three parts parts of cell theory:
- All organisms are made up of one or more cells.
- A cell is the basic structural and functional unit of organisms
- All cells come from pre-existing cells from cell division
Make the first compound microscope
(1600’s, netherlands) Zacharias Jannsen
He coined the term “Cell” as he was looking at a piece of cork under his microscope, and the little chambers he saw reminded him of the cell that the monk slept in.
(1665)Robert Hooke
He called the bacteria in his day “Animalcules”
(1667)Anton van Leeuwenhoek
He accidentally discovered bacteria by looking at dental scrapings.
(1667)Anton van Leeuwenhoek
He sends a letter to his colleague in England by the name of Robert hooke.
(1667)Anton van Leeuwenhoek
Two German scientist discovered something that today helped tied together of what we know the “CELL THEORY”
Matthias Schleiden
Theodor Schwann
-A botanist
-Studied plant species
Matthias Schleiden
Stated that “all the plants he had looked at were all made of Cells.”
Matthias Schleiden
A scientist who studied slides of animal cells.
And a Zoologist
Theodor Schwann
Stated that “All animals are made of cells”
Theodor Schwann
He did’nt subscribe to that thought as he swore cells came from free-cell formation(they just spontaneously appeared into existence)
Schleiden
1 cell only (Already an organism)
Unicellular
2 or more (Organism is made up of two or more cells)
Multicellular
Examples of Unicellular organism
Bacteria, Amoeba, Plankton, Protozoans, Pneumococci.
Examples of Multicellular
Humans, Animals, Embryophytes.
They are protein molecules or non living things. They are comparable with parasites.
Viruses
Types of Tissues
Epithelial Tissue
Connective
Neurons
Muscular
What is the function of Epithelial Tissue
For Lining and Protection
Protection from environmental hazards; temperature control
Integumentary system
What is the function of Connective tissue
Connections
What is the function of muscular tissue
For Movement
What is the function of Neurons
nerve impulses
Support, protection of soft tissues; mineral storage; blood formation
Skeletal system
Locomotion, support, heat production
Muscular system
Directing immediate responses to stimuli, usually by coordinating the activities of other organ systems
Nervous system
Internal transport of cells and dissolved materials, including nutrients, wastes, and gases
Cardiovascular system
Directing long-term changes in the activities of other organ systems
Endocrine system
Defense against infection and disease
Lymphatic system
Delivery of air to sites where gas exchange can occur between the air and circulating blood
Respiratory system
Processing of food and absorption of organic nutrients, minerals, vitamins, and water
Digestive system
Elimination of excess water, salts, and waste products; control of pH
Urinary system
Production of sex cells and hormones.
Reproductive system
In biology if the cell divide it multiply
Division=Multiplication
process by which a cell replicates its chromosomes and then segregates them, producing two identical nuclei in preparation for cell division.
Mitosis
Example of Mitosis
Ex. Skin, muscle, every cell in the body.
a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, the sperm or egg cells.
Meiosis
- Simple structure) no membrane
*bound organelles - no true nucleus
- unicellular
Prokaryotic Cell
Prokaryotic cells are called?
False nucleus
*0.1-5 micrometers
* has cell wall
* asexual
reproduction
Prokaryotic
Prokaryotic cells example
ex.)Bacteria, Cyanobacteria, Mycoplasma
- contains membrane
bound organelles - contains true
membrane organelles
Eukaryotic Cells
- uni/multicellular
- 10-100 micrometers
- asexual and sexual
reproduction
Eukaryotic Cells
Eukaryotic cells are also callled
True Cells
Examples of Eukaryotic cells
ex.) Humans, Animals
