The cell 1 and 2 Flashcards
What are the characteristics of the cells?
- basic unit of function and structure of living organism
- derived from a single fertilized egg
- develops structural atributes to suit function through differenciation
What is the structure? (draw diagram)
Labels of diagram :
- cell membrane - allows interaction w/ external environment
- Cytoplasm- located between plasma membrane and nucleus
organelless - preform specific function - Nucleus- directs cell activities
What are the functional characteristics of the cell?
-cells produce own ATP
- communication biosignalling
- synthesis of molecules
-Reproduction and inheritance
What are the functions of membrane proteins
- boundary and seperation
- encloses and supports
- attaches to EE
- Recongize and communicate
- selectively permeiable
Whats is the plasma memebrane permeable to?
-Slightly to water
- barrier to ion and molecules
- Not barrier to fat soluble (fatty acids, steriods, vits, o2 Co2) - diffuse across lipid layer
What are the Plasma membrane Proteins?
Ion channel
carriers
receptors
enzymes
linker
cell identidy maker
What is the function of PMP- Ion channel?
integral - allows molecules to pass through
what is the function of PMP - Carries?
integral
- transport specific substances
What is the function of PSM -
receptor?
integral
- recgonize specific lingard - alters cell
what is the function of PSM-
Enzyme?
integral and peripheral
catalyses reaction inside and out dependent on direction
What is the function of PSM-
Linker?
integral and peripheral
- anchors filaments inside and out
Participates in movemnet of cells
links 2 together
what is the function of PMP-
Cell identify maker?
Gyloprotein
- distingushes cells
What are the transport methods across PM?
Passive and active
What is passive transport?
Does not require atp
Types
1.simple diffusion (o2, Co2)
2. Faccilitad (Glucose)
3. Osmosis (water)
What is active transport?
Require atp
Two types Primary and sceondary
