Organelles Flashcards
CELL MEMBRANE
Description - Phospholipid bilayer - Contains proteins Function - Controls movement of materials in and out of cell
CYTOPLASM
Description - Jelly-like fluid - Also called cytosol Function - Holds organelles, molecules, and ions
NUCLEUS
Description
- Membrane bounds organelles
Function
Contains DNA (determines how cell function)
NUCLEAR PORE
Description
- Group of proteins
Function
- Forms openings in nuclear envelope
NUCLEOPLASM
Description
- Thick fluid
Function
- Holds contents of nucleus
NUCLEOLUS
Description - Non-membrane bound structure Function - Contains, RNA, protein and chromatin - Makes ribosomes
NUCLEAR ENVELOPE
Description - Double membrane - 2 phospholipid bilayers Function - Separates nucleus from rest of cell
RIBOSOMES
Description
- Composed of RNA and proteins
Function
- Help build proteins
ENDOPLASMIC RETICULUM (ER)
Description - Complex system of sacs and channels Function Rough: Makes proteins Smooth: Makes lipids
ENDOMEMBRANE SYSTEM
Description
- Group of organelles that work together in eukaryotic cells
Function
- Modify, package, and transport cell products (ex. Proteins)
GOLGI APPARATUS
Description
- Stack of cured membrane sacs
Function
Packages, processes, sorts and distributes proteins and lipids
VESICLE
Description
- Tiny sacs
Function
Transports material within or outside cell
LYSOSOMES
Description
- Membrane-bound vesicle filled with digestive enzymes
Function
Breaks down worn out cell components and materials brought into cell
PEROXISOMES
Description - Membrane bound vesicle - Contains enzymes Function - Breaks down lipids, toxic waste products (alcohol)
VACUOLE
Description
- Large membrane bound sacs
Function
- Stores H2O, ions, macromolecules, sugars, amino acids