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Life Science: Cells

Terms in this set (22)

Cell
Basic unit of life
Organelle
A tiny cell structure that carries out a specific function within the cell
Cytoplasm
A jellylike fluid inside the cell in which the organelles are suspended, moves material in the cell
Cytoskeleton
A network of fibers that holds the cell together, helps the cell to keep its shape, and aids in movement
Nucleus
Control center of the cell
Ribosome
site of protein synthesis (make proteins)
Mitochondria
Powerhouse of the cell, organelle that is the site of ATP (energy) production
Chloroplast
An organelle found in plant and algae cells where photosynthesis occurs
The two organelles associated with energy
mitochondria and chloroplasts
The two organelles associated with making proteins
nucleus and ribosome
Cell Wall
A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.
Cell Membrane
A cell structure that controls which substances can enter or leave the cell.
3 parts of cell theory
1) all living things made of cells, 2) cells are the basic unit of structure and function 3) new cells come from preexisting cells
Robert Hooke
first to observe "small chambers" in cork and call them cells.
Leuwenhoek
Observed tiny microscopic organisms under the microscope and called them "animalcules"
Vacuole
A sac inside a cell that acts as a storage area
Microscope
An instrument that makes small objects look larger
Objective lens
The lens on a light microscope that is closest to the stage.
Where does photosynthesis occur in a cell?
chloroplasts
Where is DNA stored?
nucleus
Where are proteins made?
ribosomes
What organelles are ONLY found in plant cells?
chloroplast, cell wall, central vacuole
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