Cell theory Flashcards
(20 cards)
What is a cell
in biology the smallest unit that can preform all life processes
cell membrane
a phospholipid layer that covers a cells surface
organelle
one of the small bodies in a cells cytoplasm that are specialized to perform a specific function
nucleus
in a eukaryotic cell a membranebound organelle that contains the cells dna and has a role in processes such as growth metabolism and reproduction
prokaryote
an organism that consts of a single cell that doesn’t have a nucleus
eukaryotes
an organism made up of cells that have a nucleus enclosed by a membrane
cell wall
a rigid structure that surrounds the cell membrane and provides a support of the cell
ribosome
cell organelle composed of RNA and protein
endoplasmic reticulum
a system of membranes that is found in a cells cytoplasm that is found in a cells cytoplasm and that assists in the production
x mitochondrion
in eukaryotic cells the organelle that is surrounded by two membranes and that is the site of cellular respiration
Golgi complex
organelle found in most eukaryotic cells. Part of the endomembrane system in the cytoplasm,
vesicle
a structure within or outside a cell, consisting of liquid or cytoplasm enclosed by a lipid bilayer.
lysosome
a membrane-bound cell organelle that contains digestive enzymes
tissue
a group of cells that have similar structure and that function together as a unit
organ
a part of an organism that is typically self-contained and has a specific vital function, such as the heart or liver in humans.
organ system
An organ system is a biological system consisting of a group of organs that work together to perform one or more functions
organism
an individual animal, plant, or single-celled life form.
structure
the arrangement of and relations between the parts or elements of something complex
function
an activity or purpose natural to or intended for a person or thing.
vacuole
a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid.
