Chapter 6 Cell Structure Intern Components Flashcards
3 special characteristics of the plasma membrane?
- functions as both a SELECTIVELY PERMEABLE BARRIER and a communication center.
- its variety of functions are enabled by a variety of MEMBRANE PROTEINS associated w/ the phospholipid bilayer
- its SELECTIVE PERMEABILITY comes from the variety of TRANSPORT PROTEINS embedded in the phospholipid bilayer.
Describe the fluid mosaic model of the plasma membrane
a very mobile mixture of phospholipids, other fats, and a variety of membrane proteins
What organelles do EUKARYOTIC and PROKARYOTIC cells share?
- Cell Membrane
- Cell Wall
- CILIA
- Cytosol
- DNA
- Ribosomes
- Flagella
- Capsule
What organelles are unique to plant cells?
chloroplast
plasmosdesmata
vacuoles
cell wall
What organelles are unique to animal cells?
lysosome
Nucleus
control center of the cell
contains the DNA
has nuclear pores
NUCLEOLUS function
produces large amounts of ribosomal RNA (rRNA)
Endoplasmic Reticulum (ER) function
main site for synthesis of lipids and certain proteins in Euk. Cells
acts as a manufacturing and packing system
works closely with Golgi apparatus, ribosomes and certain types of RNA
Rough ER
a part of the ER that has attached ribosomes (which make it “rough”)
specializes in protein synthesis
Smooth ER
no ribosomes
lipid synthesis
Vesicles
stores nutrients and other substances
Golgi apparatus
sorts and directs proteins and lipids
stacked & flattened sacs
Lysosome
breaks down macromolecules
scrapyard
Mitochondria
site of cellular respiration in EUKARYOTES
break down simple sugars and produce energy rich molecules
transport vesicles
transport materials from one place to another
