Science|Major part of the cell|Cell Theory
separates the cytoplasm from external environment
Cell membrane/Plasma membrane
Give 5 Parts of Cell Membrane
1. phospholipids
2. cholesterol
3. membrane proteins
4. glycolipids
5. glycoproteins
Give 2 region of phospholipids
1. head region
2. tail region
2 types of HEAD REGION
1. phosphate group
2. hydrophilic
2 types of TAIL REGION
1. two fatty acid and chains
2. hydrophobic
2 PHOSPHOLIPID LAYERS
1. phosphate head
2. fatty acid tails
face the cytoplasm and the cell's exterior
phosphate head
called SANDWICH
fatty acid tails
Important property of the "lipid bilayer"
Selective Permeability
3 kinds of PERMEABLE
1. lipids
2. alcohol
3. small molecules
4 KINDS OF LARGE MOLECULES
1. glucose
2. nucleic acid
3. amino acids
4. proteins
2 Kinds of Impermeable
1. POLAR MOLECULES
2. LARGE MOLECULES
4 Kinds of LARGE MOLECULES
1. glucose
2. amino acids
3. nucleic acid
4. proteins
4 CELL MEMBRANE PROTEINS
1. Channel Proteins
2. Carrier Proteins
3. Cell Proteins
4. Receptor Proteins
Network of protein fibers that gives the cell its structural frameworks
CYTOSKELETON
Helically arranged globular proteins called _____?
MICROTUBULES
TUBULIN
-Long fibers of actin protein, making them the thinnest cytoskeleton
-Help facilitate cell and organelles
-Help change the shape of cell
Microfilaments
-Helps maintain cell shape
-Anchors the nucleus
-Structural integrity to the plasma membrane
Intermediate Filaments
-All different subcellular structures are suspended
-Composed of the cytosol, a semifluid solution that consists of water and inorganic and organic molecules.
CYTOPLASM
-Rigid structure, surrounds the cell membrane
-Help maintain the shape of cells and prevent from bursting
Cell Wall
Most bacteria have cell wall made up of ______.
Peptidoglycan
The cell wall in some funji consist of _____.
Chitin
In plants cell, the cell wall consist of mesh-like ______ fibers.
Cellulose
-composed of phospholipids
-primary barrier of the cell
-semi-permeable in nature
Plasma Membrane
- microtubules, microfilaments, and intermediate
- support and framework and facilitate motility in cells
Cytoskeleton
- jelly-like structure
- semi-fluid cytosol where organelles and other cellular are immersed
Cytoplasm
-Peptidoglycal in bacterial cell and cellulose
-rigid structure for the cell and prevents it from bursting
Cell wall
passage way of certain molecules
channel proteins
change conformation to transport molecules
carrier proteins
detect invading pathogens
cell recognition proteins
binding of molecules to trigger responses
receptor proteins
three main principles of Cell
All cell are composed of 2 or more cell.
Cell is the basic unit of life.
All cell come from pre-existing cell.
He discovered cell from a PIECE OF CORK SPECIMEN STRUCTURES
According to him Cell is Chamber like structures and later became famous.
Robert Hooke
To him Cells are animalcules aboservation on tiny living organisms.
Anton Van Leeuwenhoek
According to him Cell is diverse kinds pf plants specimen under the microscope.
Robert Brown
He is a German Botanist and stated that All plants are made up of cell.
Matthias Schleiden
He stated that all animal tissue are composed of cell too.
Theodor Schwann
He stated that all cells came from pre-existing cell.
Rudolf Virchow
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