Kategorier: Alle - eukaryotes - ribosomes - prokaryotes - metabolism

av Farah Amalina 8 år siden

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PROKARYOTIC & EUCARYOTIC CELLS

Prokaryotic and eukaryotic cells exhibit distinct structural and functional characteristics. Eukaryotic cells, which include organisms such as animals, plants, and fungi, possess a well-defined nucleus, complex organelles, and a cytoskeleton.

PROKARYOTIC & EUCARYOTIC CELLS

Gram negative vs gram positive cell wall

Prokaryotes vs eukaryotes

PROKARYOTIC & EUCARYOTIC CELLS

Components of prokaryotic cell

structures internal to the cell wall
Inclusions

Magnetosomes

Gas vacuoles

Carboxysomes

Sulfur granules

Lipid inclusions

Polysaccharide granules

Metachromatic granules

Ribosomes
Nuclear Area
Cytoplasm
Plasma (cytoplasmic) membrane

Active processes

Passive processes

Osmosis

Hypertonic

Hypotonic

Isotonic

Facilitated diffusion

Simple diffusion

Gram negative cell wall
Gram positive cell wall
structures external to the cell wall
Fimbriae and pili
Axial filaments
Flagella

Lophotrichous

Amphitrichous

Peritrichous

Monotrichous

Glycocalyx

What is life?

Cellular structure
Metabolism
Responsiveness
Reproduction
Growth

Prokaryotic

no membrane receptors
binary fission
no membrane bound organelles
circular DNA
complex cell wall
small ribosomes
simple appendages
no cytoskeleton
unbound nucleoid

Bacterial and archaeal structures

endospore
survival under harsh condition
flagella
swimming motality
fimbriae and pili
attachment to surface
capsules and slime layers
resistance to phagocytosis
cell wall
provides shape and protection
periplasmic space
G(+) small or absent
G(-) contain hydrolytic enzymes
nucleiod
localisation of genetic material
inclusions
storage of carbons, phosphates and others
ribosomes
protein synthesis
gas vacuole
buoyancy for floating
plasma membrane
selectively permeable barrier

Eukaryotic

big ribosomes
cytoskeleton
cell wall simple when present
mitosis
membrane receptors
membrane bound organelles
linear DNA with histones
complex appendages
membrane bound nucleus and nucleolus