Cells Review Flashcards
Prokaryote
Lack internal membranes
Eukaryote
Have internal membranes + organelles
Cell wall purpose
Surrounds protoplasm (all living parts of the cell)
Support
Protection
Middle lamella purpose
Attaches cells together
Primary cell wall
Flexibility?
Made of?
Flexible
Made up of cellulose, hemicellulose, pectin, glycoprotein
Secondary cell wall purpose
Strength? Thickness? Made of?
Very strong
Thickness varies
Cellulose
Plasmodesmata purpose
Opening between cells where cell wall is not created
Chemical communication
Plasma Membrane location?
Lines cell wall
Protoplasm location
All areas within plasma membrane
Nucleus is bound by?
Consists of?
What does nucleolus hold?
Bound by nuclear envelope
DNA
Nucleolus-RNA
Cytoplasm location?
Includes?
All the “stuff between the plasma membrane and the nuclear envelope
Cytosol and Organelles
Cytosol =
“Liquid” part of the cytoplasm
Organelles =
“Solid” parts of the cytoplasm
Endoplasmic Reticulum purpose
Makes membranes
Fine-tunes proteins
Ribosomes purpose
Protein synthesis
Golgi aparratus purpose
Protein packaging for export
Microbodies =
2 types of microbodies?
Spherical organelles
Peroxisome
Glyoxisome
Peroxisome purpose
Handles toxic by-products
Glyoxisome
Converts fats into usable sugars
Vacuole location?
Purpose?
Big sac in the middle of the cell
Storage for water, sugar, proteins, salts, metabolic wastes, organic acid
Color*- petals “Cell sap” - Fluid inside vacuole
Cytoskeleton is made up of
Microfilaments
Microtubules
Microfilaments purpose
Move molecules + macromolecules inside the cells
Microtubules purpose
involved in mitosis + meiosis
Mitochondrion purpose
Membrane type?
DNA type
Powerhouse of the cell
Accesses stored energy: glucose
Double Membrane
MtDNA - circular shaped, not double helix