Cells Flashcards
Cell (Plasma) Membrane (aka Phospholipid Bilayer)
separates interior of cell from outside environment, moderates what goes in and out of cell
Cytoplasm
the gelatinous liquid that fills the inside of a cell
Golgi Apparatus (UPS)
organelle that acts as the packaging center of the cell and transports materials
Mitochondria
generate most of the energy; powerhouse (site of respiration)
Chloroplast (Plants Only)
produce energy through photosynthesis and oxygen-release processes
Nucleus
contains the chromosomes (genes), the cell’s control center
Ribosome
the site of protein synthesis (attach to ER)
Endoplasmic Reticulum
a transportation system within cell, carry ribosomes making proteins (ribosomes make an ER rough, smooth ER has lipids)
Lysosomes (Animals Only)
organelle that contains digestive enzymes, break down waste of cell
Cell Wall (Plants & Bacteria Only)
found outside of membrane and protects cell
Vacuole
helps in the storage and disposal of materials within cell (plants have large vacuole, animals have a small or no vacuole)
Nuclear Membrane
a double layer that encloses the cell’s nucleus
Nucleolus
area inside nucleus made up of RNA and proteins and is where ribosomes are made
Centrioles
organizes things (microtubules) that serve as the cell’s skeletal system
Cilia & Flagella
used to move an entire cell (hair-like)
Prokaryotes
organisms whose cells lack a nucleus and other organelles, have circular DNA, and are only single-celled (bacteria and archaea)
Eukaryotes
have a nucleus, membrane-bound organelles, and can be multicellular
Robert Hooke
while looking at cork, he discovered cells
3 Parts of Cell Theory
All living things are made of cells.
Cells are the basic units of structure and function in living things.
Cells come from other, pre-existing cells.
Anton van Leeuwenhoek
made a simple microscope to see unicellular organisms in pond water
Robert Brown
discovered nucleus
Matthias Schleiden
hypothesized that plants are made of cells
Theodor Schwann
hypothesized that animals are made of cells
Rudolf Virchow
determined the function of the nucleus and that all cells come from pre-existing cells