2.1 - Cell Parts Flashcards
Organelle
a structure within a
cell with a specific function
Cell Membrane (Animal Cells)
surrounds the cell and protects it.
Controls the movement of
substances into and out of the
cell.
Cell Wall (Plants)
tough outer
layer that surrounds plant cells
True or False? Organelles are also covered by
membranes
True
Cytosol/cytoplasm
the fluid inside cells
Nucleus
controls the cell’s
activities, contains DNA - which has instructions for
producing other materials
Nuclear membrane/envelope
Surrounds the nucleus, Allows water and gases to
transport freely (other substances need help of a system transporter)
Nucleolus
in the nucleus + makes ribosomes
The nuclear envelope consists of:
2 lipid bilayers that are folded together
The outer layer of the nuclear envelope is continuous with:
endoplasmic reticulum (er)
Nuclear membrane proteins are embedded in a:
lipid bilayer
Ribosomes
build proteins, may be free floating or
attached to ER
How to ribosomes build proteins?
attach amino acids into chains
Endomembrane system
a group of interacting
organelles between the nucleus and the cell membrane
Main function of endomembrane system
destroy toxins and recycle wastes. make lipids, enzymes, and other
proteins for secretion and insertion into cell membranes
