science Flashcards
cell
in biology the smallest unit that can perform all life processes cells are covered by membrane and have DNA and cytoplasm
prokaryote
an organism that consist of a single cell that does not have a nucleus
eukaryote
an organism made up of cells that have a nucleus enclosed by a membrane
cell wall
a rigid structure that surrounds the cells membrane and provides support to the cells
ribosome
cell organelle composed or RNA and protein
endoplasmic reticulum
a systerm of membranes that is found in a cell`s cytoplasm and that assists in the production
mitochondrion
in eukaryotic cells the cell organelle that is surrounded by two membranes and that is the site of cellular respiration
vesicle
a small cavity or sac that contains materials in a eukaryotic cell
golgi complex
cell organelle that helps make and package materialist transported out of the cell
lysosome
a cell organelle that contais digesttive enzymes
organ
a collection of tissues that carry out a specialized function of the body
tissue
a group of similar cells that preform a common function
organ system
a group of organs that work together to preform body functions
organisms
a living ting
structure
the arrangement of parts in an organism
