* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Prokaryotes
Survey
Document related concepts
Biochemical switches in the cell cycle wikipedia , lookup
Extracellular matrix wikipedia , lookup
Cell culture wikipedia , lookup
Cellular differentiation wikipedia , lookup
Signal transduction wikipedia , lookup
Cell encapsulation wikipedia , lookup
Cell growth wikipedia , lookup
Programmed cell death wikipedia , lookup
Organ-on-a-chip wikipedia , lookup
Cytoplasmic streaming wikipedia , lookup
Cell nucleus wikipedia , lookup
Cell membrane wikipedia , lookup
Cytokinesis wikipedia , lookup
Endomembrane system wikipedia , lookup
Transcript
Prokaryotes Monera Archae, Bacteria Simple Smaller .5 to 2um (~1/1000th mm) ANALOGY No Nucleus -DNA in nucleoid region Prokarytic cell wall (peptidoglycan) -rigid, maintain shape of cell -protection - surrounds plasma membrane Capsule – found around some prokaryotes over cell wall - sticky polysaccharide covering - protection - found on many pathogenic bacteria that use to avoid your WBC’s Projections - Pili – help prokaryote attach to surfaces and other cells - prokaryotic flagella – motility (swimming) - can have 1 or more (many) - rotates like a screw Organelles (Structures within cell having specialized funtion): 1. flagella 2. ribosomes 3. chromosome – DNA plus associated proteins NO MEMBRANE BOUND ORGANELLES IN PROKARYOTES semifluid - aqueous fluid that fills the cells between organelles. Eukaryotes Protista, Fungi, plantae, animalia Eukarya Complex 10 to 100um (1/10th to 1/100th mm) – 10 to 100X larger diameter than prokaryotes DNA in Nucleus Eukaryotic cell wall -plants (cellulose) -fungi (chitin) -algae (glycoproteins and polysacc) (similar functions to prokaryotes) No Capsule Projections - eukaryotic flagella - whips back and forth like a cats tail - cilia – more numerous and shorter than flagella prokaryotic and eukaryotic flagella are structurally DIFFERENT Organelles: 1. Non membranous organelles like bacteria plus others like centrioles 2. Membrane bound organelles – compartments to maintain a unique metabolic environment SEE ORGANELLE CHART cytosol - aqueous solution that fills the cell between organelles Cytoplasm - cytosol plus non-membranous organelles (i.e. ribosomes)