Cells and Tissues Flashcards
-basic unit of structure and function because it demonstrates all qualities of life processes
-simplest collection of matter that can live
Cells
(1590) invented lens
Zaccharias and Hans Janssen
(1632) Father of microscopy
Anton van Leeuwenhooke
(1665) discovered cells (Micrographia)
Robert Hooke
(1839)
- a German botanist and co-founder of the cell theory
-“All plants are made of cells”
Matthias Jakob Schleiden
(1839)
- a German zoologist and co-founder of the cell theory
-“All animals are made of cells”
Theodor Schwann
(1858)
-a German physician and co-founder of the cell theory
-proposed biogenesis stated that all living cells arise from pre-existing living cells, that there is no spontaneous creation of cells from nonliving matter
Rudolf Virchow
Cell theory
- All living things are made up of one or more cells
- Cells are the basic unit of life
- All cells arise from pre-existing cells
Modern Cell Theory
- Cells make up all life
- Cells are functional and structural units
- Cells are formed by division
- Cells contain hereditary information
- Cells are chemically the same
- Energy flow occurs within cells
-the powerhouse, provides energy though energy flow
Mitochondria
Cellular Parts
-Cell wall
-Cell Membrane
-Protoplasm
-Nucleus
-Endoplasmic Reticulum
-Golgi Apparatus
-Mitochondria
-Ribosomes
-Lysosomes
-Peroxisome
-Cytoskeleton
-Chloroplast
-Vacuoles
-Robert Hooke (1665)
-present in plant cell only
Cell Wall
Functions of Cell wall
- protects the plant cells
- maintain its shape
- prevents excessive uptake of water
-C. Naegeli and C. Cramer (1885)
-present both in plant and animal cell
Cell Membrane
Functions of Cell Membrane
- Covers and protect the cell
- Facilitate substance transport
- Maintain the shape of the cell
-Johann Evangelist Purkinje (1839)
-present both in plant and animal cell
-Contains the endomembrane system that regulates protein traffic and performs metabolic functions
Protoplasm
-Information or Control Center
-Robert Brown (1833)
-houses the genetic information
Nucleus
Parts of Nucleus
Nuclear Envelope-2 layers with pore complexes
Chromosomes-discrete unit of DNA
Nucleolus-synthesizes rRNA