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cell biology Cheat Sheet (DRAFT) by

this might help you to crack science olympiad

This is a draft cheat sheet. It is a work in progress and is not finished yet.

what is cell

all organisma are made up of cell that is the struct­ural, functional and dundam­ental unit of life
Robert Hooke in 1665 discovered the cellula from dead cork

types of cells

cells are of two types
prokar­yotic cells: they are primitive cells that lacks nucleus
eukaryotic cells: they are modified cells that have nucleus

components of prokaryots

plasma membrane is made up of lipid bilayer
mesosomes are infoldings in cell memb. that helps in respir­ation dna replic­ation and metabolic activities
nucleoid is loose genetic material that is present in cytoplasm
ribosomes are protiein synthetic unit that are od 70& type in pro. cells
glycolyx is a protective capsule around cells
polysomes are many ribosomes together on Mrna
pili is reprod­uctive unit of cell
flagella is for locomotion

cell wall of prokarots

it is made of peptid­oglycan that is a hetrop­oly­sac­hride
 

cell theory

all cells comes from pre existing cells
omnis cellula e cellula
neuron, heart cells, muscle cells do not divide
RBC do not have nucleus
virus is not considered living

fluid mosaic model

referred as icebergs in sea
given by singer and nicolson in 1972
made of lipids and protein
protein is peripheral that is partially embeded in plasma membrane and integral that is trans membrane protein
lipids are phosph­olipids that is made of head and tail the head is hydrop­hilic and tail is hydrop­hobioxc

fluid mosaic model

referred as icebergs in sea
given by singer and nicolson in 1972
made of lipids and protein
protein is peripheral that is partially embeded in plasma membrane and integral that is trans membrane protein
lipids are phosph­olipids that is made of head and tail the head is hydrop­hilic and tail is hydrop­hobioxc

fluid mosaic model

referred as icebergs in sea
given by singer and nicolson in 1972
made of lipids and protein
protein is peripheral that is partially embeded in plasma membrane and integral that is trans membrane protein
lipids are phosph­olipids that is made of head and tail the head is hydrop­hilic and tail is hydrop­hobioxc

fluid mosaic model

referred as icebergs in sea
given by singer and nicolson in 1972
made of lipids and protein
protein is peripheral that is partially embeded in plasma membrane and integral that is trans membrane protein
lipids are phosph­olipids that is made of head and tail the head is hydrop­hilic and tail is hydrop­hobioxc

fluid mosaic model

referred as icebergs in sea
given by singer and nicolson in 1972
made of lipids and protein
protein is peripheral that is partially embeded in plasma membrane and integral that is trans membrane protein
lipids are phosph­olipids that is made of head and tail the head is hydrop­hilic and tail is hydrop­hobioxc