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Cell Structure
and FunctionChapter 7
Vocab Review
http://www.biologycorner.com/resources/cell.gif
Process in which cells change and develop into different kinds of cells doing different jobs
Differentiation OR cell specialization
Idea that all living things are made of Cells, cells are the basic units of structure and function in living things, and new cells are produced by existing cells
Cell theory
Collection of living material enclosed by a barrier that separates it from its surroundings; the basic unit of life
cell
Log-like structures that pull the chromosomes apart during cell division in animal cells
centrioles
Sac of digestive enzymes used by cells to break down food, cell parts, or whole cells
lysosomes
Membrane stacks found insidechloroplasts where the enzymes for photosynthesis are found
thylakoids
Control center of the cell thatcontains the genetic material
nucleus
Stack of membranes in cells that modifies, sorts, and packages proteins from the ER for transport
Golgi body (apparatus)
DNA with attached proteins found spread out in the nucleus of non-dividing cells
chromatin
Describes molecules that try tostay away from water…means “water fearing”
hydrophobic
Nucleotide molecules used by cells to store and transfer energy
ATP
Membrane protein with sugars attached that help cells identify “self”
glycoproteins
DNA with proteins attached that is scrunched up into compact bodies in the nucleus of dividing cells
chromosomes
Molecule with a polar head and two hydrophobic tails used to make cell membranes
phospholipid
Space used to store water, food, molecules, enzymes, or waste
vacuole
Many, small hair-like structures made of microtubules in a 9+2 arrangementthat extend from the surface of cells and help in movement
cilia
Dark spot in the cell nucleus where RNA for ribosomes is made
Nucleolus
Network of microtubules and microfilaments that give the cell shape and support it
cytoskeleton
Organism whose cells have a nucleus and organelles surrounded by membranes
eukaryote
Gel-like material and the organellesfound between the nucleus and cellmembrane
cytoplasm
Double membrane that surrounds the cell nucleusNuclear envelopeOR nuclear membrane
Small particles that make proteins
ribosomes
Membrane system without ribosomes attached involved in lipid synthesis, calcium regulation, and the break down of toxins
Smooth ER
Power plant of the cell that burnsglucose and stores the energy released in ATP
mitochondria
Folded inner membrane inside amitochondrion
cristae
System of membranes with ribosomes attached where proteinsare produced and modified
Rough ER
Organelle where photosynthesis happens
chloroplast
Bilayer made of phospholipids and proteins which surrounds all cells and controls what enters and leaves Cell membrane
Double layer formed when phospholipidsline up with their hydrophillic heads tothe outside and their hydrophobic tailstoward the center
bilayer
Molecule with an uneven patternof charges… slightly positive on one side, slightly negative on the other polar
Small structure inside eukaryotic cells which carries out a specific functionorganelle
Unicellular organism that does NOT have a nucleus and or organelles surrounded by membranes
prokaryote
A living thing composed of many organ systems
organism
Structure found outside the cell membrane that provides support and protection
Cell wall
Polysaccharide found in plantcell walls that makes them sturdy
cellulose
Molecule made by joining aminoacid subunits that is used to make cell membranes
protein
Molecule used to build bacterial cell walls instead of cellulose
peptidoglycan
Programmed cell death;“cell suicide”
apoptosis
A few, long hair-like structures made of microtubules in a 9+2 arrangementthat extend from the surface of cells and help in movement
flagella
Small openings in the nuclear membrane that allow moleculesto pass through
Nuclear pores
A group of similar cells working together
tissue
Organism made of many cells
multi-cellular
Group of different organs working together
organ system
Protein found in cell membraneswhich helps molecules get acrossthe membrane
Carrier protein