Cell Structure and Function - Windward Community College
The Cell as the Fundamental Unit of Life: The Structure and Function of Cellular Organelles The cell is the smallest unit of life. All organisms are composed one
or more cells. New cells arise from previously existing cells. Basic Cell Structure Each cell has four common components: 1. Plasma membrane
2. Region containing DNA 3. Cytoplasm 4. Biochemical molecules & biochemical pathways Cells Two fundamental types:
Prokaryotic No Nucleus No organelles Small 100nm-5um Eukaryotic True Nucleus Membrane bound
organelles 10-100um Some are larger Classification Five kingdom system: Monera
Protista Plantae Fungi
Animalia Plantae Fungi Animalia
Six kingdom system: Eubacteria Archaebacteria Protista
Three domain system: Eubacteria Archaebacteria E
U K A
R Y A Protista
Archaebacteria Chromista Eubacteria
Archezoa Eight kingdom system: Plantae Fungi
Animalia Three Lineages of Life: Domain Bacteria Kingdom Eubacteria
Eubacteria Archaebacteria Protista Plantae
Fungi Prokaryotes: No true nucleus No membrane-bound organelles Cell Wall composed of peptidoglycan
Reproduce asexually by budding and fission Very small (1 - 10 m) Animalia Kingdom Archaebacteria Eubacteria
Archaebacteria Protista Plantae
Fungi Animalia Eukaria Prokaryotes:
No true nucleus No membrane-bound organelles like mitochondria or chloroplasts NO peptidoglycan in cell wall Reproduce asexually by budding and fission Very small (1 - 10 m) Extreme environments (high temperatures)
Prokaryotic Cells Eukaryotes Eubacteria
Archaebacteria Protista Plantae Fungi
Eukaryotes: True nucleus Membrane-bound organelles Cell size generally 10 - 100 m At least 4 lineages: Protista, Plantae, Fungi, Animalia
Animalia Eukaryotic Cells Typical Animal Cell
The Cytoplasm Plasma Membrane Fluid mosaic model: Working model of the membrane Protein molecules bobbing in phospholipid sea Proteins determine membranes specific
functions Structure of the Cell Membrane Phospholipids Most abundant lipid Polar/hydrophilic head(attracted to water) Pair of nonpolar/hydrophobic tails(repelled by water)
Hydrophilic head Hydrophobic tails Phospholipid bilayer:
Polar heads, outside & inside Nonpolar tails in the interior Cell Membranes Rough and Smooth ER
Golgi Apparatus Receives substances from ER, refines and packages them Lysosome Function Cytoskeleton
A map of a relatively flat area may have a contour interval of 10 feet or less. Maps in mountainous areas may have contour intervals of 100 feet or more. Contour lines point up stream. Digital Elevation Models Using elevation...
stars to locate north in northern hemisphere. Locate the Big Dipper and Little Dipper. Draw an imaginary line from the two pointer starts at base of the bowl of Big Dipper to the last and brightest start in the handle...
White box or glass box testing. Black box testing. Two Unit Testing Techniques. Black-box testing. ... White-box testing technique proposed by Tom McCabe enables the test case designer to derive a logical complexity measure of a procedural design.
Small and Large Intestines ... Movement of chyme Chyme enters the colon thru ileocecal valve Located b/t ileum and colon Gastroileal reflex regulates ileocecal valve by the peristaltic waves Major segments of Lg intestines Transverse Ascending Sites of water and...
12/25 Christmas. 1/1 New Year's Day. 1/8 Bible Study resumes in 2019. Outline . Names of God in the Hebrew Bible. ... Metaphors. Use what we know to describe what we don't know. First word, comes usually from the world...
Ready to download the document? Go ahead and hit continue!