1.2 Eukaryotic Cells Flashcards
in biology, the smallest unit that can preform all life processes; cells are covered by a membrane and have DNA and a cytoplasm
cell
a rigid structure that surrounds the cell membrane and provides support to the cell
cell wall
a complex sugar that most animals can’t digest
cellulose
what the cell walls of fungi are made of
chitin
the protective barrier that encloses a cell and separates the cell’s contents from the cell’s environment
cell membrane
web of proteins in the cytoplasm that acts as a muscle and skeleton
cytoskeleton
large organelle in a eukaryotic cell that contains the cell’s DNA
nucleus
dark area where the cell begins to make its ribosomes
nucleolus
cell organelle composed of RNA and protein; the site of protein synthesis
ribosome
a system of folded membranes that is found in a cell’s cytoplasm and that assists in the production, processing, and transport of proteins and in the production of lipids
endoplasmic reticulum
one of 20 different organic molecules that are used to make proteins
amino acids
in eukaryotic cells, the cell organelle that is surrounded by two membranes and that is the site of cellular respiration
mitochondrion
cell organelle that helps make and package materials to be transported out of the cell
golgi complex
a small cavity or sac that contains materials in a eukaryotic cell - moves materials in a cell
vesicle
a cell organelle that contains digestive enzymes
lysosome