Unit E + F Flashcards
What is the ROUGH ER
Network of membranes covered in RIBOSOMES
What are RIBOSOMES
Small spheres composed of RNA & PROTEINS
Describe the RELATIONSHIP between the ROUGH ER and RIBOSOMES
RIBOSOMES on the ROUGH ER make PROTEINS and the ROUGH ER MODIFIES and TRANSPORTS them
Why is the CELL MEMBRANE SELECTIVELY PERMEABLE
Because it controls what ENTERS and EXITS the cell
What does the FLUID-MOSAIC MODEL showcase
The model shows the membrane is flexible, allowing movement and selective function
What is DIFFUSION
Movement of MOLECULES from a HIGH to LOW concentration
What is OSMOSIS
Diffusion of WATER
What is FACILITATED TRANSPORT
A type of DIFFUSION that uses PROTEINS instead of MOLECULES
What is ACTIVE TRANSPORT
Movement AGAINST a concentration requiring ATP
What is ENDOCYTOSIS
ENDOCYTOSIS is the ENGULFING of another CELL
What is EXOCYTOSIS
EXOCYTOSIS is the release of another CELL
What is PHAGOCYTOSIS
CELL EATING
What is PINOCYTOSIS
CELL DRINKING
What does HYPOTONIC mean
When a CELL SWELLS
What does HYPERTONIC mean
When a CELL SHRINKS
What does ISOTONIC mean
The CELL remains NORMAL
