Tissues, Eukaryotes and Prokaryotes

tissue

a group of different or similar cells working together for a specific function

Types of tissues

epithelial, muscle and connective

3 types of epithelial

Squamous, columnar, ciliated columnar, (and cuboidal)

Squamous location

walls of the alveoli

Squamous structure

Flattened/single cell thin for short diffusion pathways for gas exchange

ciliated columnar structure

Cillia to move substances (e.g mucus)

Cilliated columnar location

in the trachea, the fallopian tubs

columnar

small intestine, have microvilli on

Differences of a eukaryote to a prokaryote

P - make atp in cytoplasm

• aerobic respiation in the mesosomes

E - membrane bound organelles

• nucleuses

• 80s ribosomes

what are the 5 kingdoms

EUKARYOTES(Animal, plants, fungi, protoctists) Prokaryotes(Archea and eubacteria)

The cell theory

all living organisms are made of cells

• cell is the basic unit of life

• cells arise from pre existing cells

The endosymbiotic theory Part 1

suggests that eukaryotic cells evolved when larger, ancestral cells engulfed a free living prokaryote

The endosymbiotic theory part 2

Instead of digesting them, the host cell and free living prokaryote developed a mutually beneficial/symbiotic relationship, evoliving into modern organelles

structural features of Mitochondria and chloroplasts that prove this theory part 1

• have 70s ribosomes

• contain circular dna (separate from the cells nuclear dna, like bacteria)

• double membranes (outer is host cells, inner is prokaryotes)

• replicate by process similar to binary fission