The Cell Flashcards
Plasma membrane
Outer boundary
allows cell to interact with external enviorment
Nucleus
directs cell activities
Cytoplasm
Located between plasma memebrane and nucleus
contain Organelles
Cell membrane general functions
- Boundary seperation
- Encloses and supports cell
- Attaches to extracellular environment or to other cells
- communicates and recognize
Selectively permeable
Characteristic functions of the cell
- Produce their own ATP
- Communication and bio signalling
- Synthesis of molecules
- Reproduction and inheritance
General function Cell Memberane
- Boundary
- encloses and supports
- attaches to extracellular enviorment and other cells
- recognise and communicate
- Selectively permeable
What is cell membrane permiable to?
- Slightly permeamble to water
- Barrier to ions and polar molecules
- not barrier to - Fatty acids
steriods
vitamins
gases
certain drugs and alcohol
- diffuse across lipid bilayer
Ion Channel
(Integral) allow molecules to pass through
Carrier
(integral) transports specific substances
Receptor
(integral) Recognizes specfic lingard and alters cell function in some way
Enzyme
(integral and peripheral) catalyezes reaction inside or outside cell
- depending on whih dircetion the active site faces
Linker
(Integral and perpheral) anchors philament inside and outside
-Participate in movement of cell and link two together
Cell Identity
(Glycoprotein) disnguishes cells from anyone else
Active Transport
Involves Atp
From lower to hight concentration
Usually pacific carriers
Passive Transport 1.
Simple diffusion- e.g. oxgen and carbon dioxide
Mitrochondria
Generates ATP
Rod like double membrane
Folds into projections = cristals
needs O2
Independant od nucleus
What are the characteristics of the cell
- Produce their own ATP
- Communication and bio signalling
- Synthesis of molecules
- Reproduction and inheritance
What is the structure of a cell membrane?
What the genral functions of the cell membrane
what are the functions of the membrane proteins
What are the basic functions of cell organelles
What are the transport mechanisms within the cell
what is the nucleus
what is the function of the nucleus
what is protein synthesis
