类别 全部 - eukaryotes - composition - organelles - structure

作者:shahira shaifulamri 11 年以前

285

eukaryotes

Eukaryotic cells are complex structures characterized by a variety of organelles and intricate cellular mechanisms. They possess a cell wall composed of different substances depending on the organism:

eukaryotes

eukaryotes

reproduction

miosis

mitosis :- Asexual reproduction ( 2n)

miosis :-sexual reproduction (n)

mitosis

properties

have steroid and carbohydrate at plasma membrene
large size of ribosome
have complex flagella and multiple microtubule
cytoskeleton
cell wall are chemical complex
have organelles
complex cell

cell wall and glycocalyx

contain carbohydrate
contain serols to increase osmotic lysis
composition
yeast: glucan and mannan
fungi : chitin
Algae and plant : cellulose
simple and lack of peptidoglycan

structure

ribosome
size

eukaryote : 80s

prokartote: 70s

found free in cytoplasm or associated with ER
have subunit

small :40s

large: 60s

cytoplasm
sequre many enzyme
have cytoskeleton

intermediate filament

microfilament

organelles
centrosome
peroxisome

Subtopic

catalase of decompose of hydrodioxide

oxidation of organic substance

mitochondria

matrix

cristae

inter membrane space

inner/outer membrene

oval and sausage shape

produce energy

site of repiration

vacuole

tyoe

contractile vacuole

regulate water balance byy remove excess water from cell

food or digestion vacuole

englulf nutreints in protozoa

central vacuole

store starch,water,pigment poison and waste

lysosome

molecular garbage

destruction of foreign materials

digest food particle

breakdown died cell

break down various molecule

digest bacteria

golgi apparatus

pakage digestive enzyme in lysosome

shipping side

modifies

receiving side

chloroplast

disc shape with 3 membrane system

site of protein synthesis

endoplasmic reticulum

SER

calcium storage for cell and muscle contrsction

regulate sugar release from liver into blood

breakdown of toxic compounds

lipid synthesis

RER

synthesis of cell and organelle membrane

synthesis and modification of protein

nucleus

function

ribosome synthesis

mastermind of eukaryotic cell

largest structure of cell

protect cell genetic

genetic material combine with histone in :

chromosome

chromatin

nuclear pore

double nuclear membrane

flagella and cilia
enclose by plasma membrane and cytoplasm

nine pair+ 2 arrangement

tubulins

microtubules

use for locomotion or movement