GEN BIO Flashcards
CELL THEORY
- The cell is the basic unit of life
- All living organisms are composed of cells
- New cells are created from pre-existing cells
•1859, invented the Swan Neck flask
•Ended the spontaneous generation, finale
•Broth was heated in various flasks for one hour to sterilize it and allowed it to cool, drawing in fresh air
•The growth of bacteria in nutrients broth is not due to spontaneous generation, but rather to biogenesis, literally life from life
Louis Pasteur
• Paved the way for the downfall of preformationism theory
•Tiny organisms from the air caused growth in flask a. These organisms could not reach flask B.
*Nagkaproblema sa air yung experiment kasi may mga organisms na hindi nakikita, kaya not accepted yung theory
Lazzaro Spallanzani 1767
•1745, experiment on spontaneous generation
•He believes in spontaneous generation
•Needham heated the broth, let it sit uncovered for several days
•His theory were not accepted, cork and flask were not sterile
John Turberville Needham
•1668, first person who did experiment to disprove the spontaneous generation
•Used wide-mouthed jars containing meat
Francisco Redi
Synthesized by Aristotle
Refers to the obsolete body of thoughts on the ordinary formation of living without descent from similar organisms
Ideas that life comes from non-life and that no causal agent is needed, such as a parent.
Maaaring magkaroon ng buhay kahit walang cell
. Ex -Maggots from rotting meat
-fish from the mud of previously dry lakes
Spontaneous Generation
It led the downfall of Spontaneous Generation Means cells comes from pre-existing cells
Omnis Cellula-e cellula
studied plant structures, 1838
small compartments on his plant specimen are cell
- Matthias Jacob Schleiden
1839, all animals are composed of cell
Animal tissues
- Theodore Schwann
1855, observed dividing cells during his work
All living cells comes from pre-existing cells
- Rudolf Virchow
invention of a more powerful microscope animalcules
Anton Van Leeuwenhoek
1675, Anton Van Leeuwenhoek came from animal molecules observed sperm cells, blood cells, and other microscopic organisms in rainwater
Animalcules
- little room
Cellula
unang nakita
tinawag na lense (lentis)
Glass
- “gave the term cell”
-box-like structure observed in a cork. tissue under the microscope in 1667
Robert Hooke
- made the first simple microscope in
1590
Hans and Zacharias Jansen
TYPES OF MULTICELLULAR ORGANISMS
- Animal Cell
- Plant Cell
TWO TYPES OF ORGANISMS
Unicellular organisms-
Multicellular organisms-
- one cell, microscopic
Unicellular organisms
- two or more cells, macroscopic
Multicellular organisms
we can make life elements
CHON-
LIFE’S LEVEL OF ORGANIZATION(AMCOPCEB)
Atoms
Molecule
Cell
Organisms
Populations
Community-
Ecosystem
Biosphere
all the regions of the earth that hold life
Biosphere-
-a community interacting with its environment
Ecosystem
- all populations of all species in a given area
Community
group of individuals of a species in a given area
Populations
an individual, consisting of one or more cell
Organisms
- smallest unit of life
Cell
two or more atoms
Molecule-
- a building block of all matter
Atoms
BRANCHES OF BIOLOGY
Botany-plants
Zoology- animals
Genetics Inheritance
Cytology-Cells
Histology- Tissues
Pag nag bungguan ang atoms, makakabuo na ng molecules
Collision-
