cell theory - Answers idea that all living things are composed of cells, cells are the basic units of structure
and function in living things, and new cells are produced from existing cells
Robert Hooke - Answers first to observe "small chambers" in cork and call them cells.
Anton van Leeuwenhoek - Answers Saw living cells (Animalcules) for the first time
Theodore Schwann - Answers all animals are made of cells
Mattias Schleiden - Answers concluded that all plants are made of cells
Rudolf Virchow - Answers concluded that new cells could be produced only from the division of existing
cells
Cell - Answers The basic unit of structure and function in living things
Tissue - Answers A group of similar cells that perform the same function.
Organ - Answers A collection of tissues that carry out a specialized function of the body
organ system - Answers group of organs that work together to perform a specific function
Organism - Answers a group of organ systems working together
spontaneous generation - Answers Hypothesis stating that life could arise from nonliving matter.
Louis Pasteur - Answers disproved spontaneous generation
Organelle - Answers A tiny cell structure that carries out a specific function within the cell
cell membrane - Answers A cell structure that controls which substances can enter or leave the cell.
Cytoplasm - Answers A jellylike fluid inside the cell in which the organelles are suspended
Cytoskeleton - Answers A network of fibers that holds the cell together, helps the cell to keep its shape,
and aids in movement
Ribosomes - Answers Makes proteins
Golgi apparatus - Answers A system of membranes that modifies and packages proteins for export by
the cell
Lysosomes - Answers cell organelle filled with enzymes needed to break down certain materials in the
cell
Smooth Endoplasmic Reticulum - Answers makes lipids, intracellular transport