28 terms

Chapter 4 Bio Vocab

STUDY
PLAY

Terms in this set (...)

cell theory
the theory that cells are the basic unit of life, all organisms are made of cells, and cells are produced only by other cells
central vacuole
large vacuole in plants cells used to store food and water
chloroplast
organelle found in plant and algae cells where photosynthesis occurs
cilia
short, hair-like structures used for motion
cytoplasm
area of a cell between the nucleus and the plasma membrane
cytoskeleton
microscopic network of filaments and microtubules that give the cell shape and provides movement
cytosol
semifluid portion of the cytoplasm that contains the organelles
endomembrane system
collection of membranes inside and around a eukaryotic cell
eukaryotic cell
cell with a nucleus (surrounded by its own membrane) and other internal membranes that make up various organelles
extracellular matrix
substance on the surface of animal cells, consisting of protein and polysaccharides.
flagella
whip-like appendage used for locomotion
fluid mosaic model
structural model of the plasma membrane where molecules are free to move sideways within a lipid bi-layer
Golgi apparatus
stack of membranes in the cell that modifies, sorts, and packages proteins from the endoplasmic reticulum
lysosome
cell organelle filled with enzymes needed to break down certain materials in the cell
magnification
ratio of the size of an image to the size of the object
mitochondria
organelle that is the site of ATP (energy) production
nuclear envelope
layer of two membranes that surrounds the nucleus of a cell
nucleolus
region where ribosomes are made, located in the nucleus
nucleus
organelle containing DNA; considered the control center of the cell
organelle
small structure in the cytoplasm that does a special jobs
phospholipid bilayer
double layer of phospholipids that makes up plasma and organelle membranes
plasma membrane
thin membrane around the cytoplasm of a cell
prokaryotic cell
cell lacking a nucleus and most other organelles
ribosome
organelle in the cytoplasm of any living cell that is used to assemble proteins
rough ER
part of the ER that is covered in ribosomes and produces protein
smooth ER
part of the ER that is not covered in ribosomes and involved in lipid metabolism and cell detox
transport vesicle
tiny membranous sac in a cell's cytoplasm that transport molecules produced by the cell
vacuole
tiny cavity mainly responsible for various types of storage in cells