cytoplasm
the fluid inside a cell
bacteria
another name for a prokaryotic cell
nucleus
the control center of a cell
lysosome
special vesicles containing enzymes
prokaryotic cell
cells that do not have a nucleus
golgi complex
organelle that modifies, packages, and transports materials out of the cell
multicellular
describes an organism that can exist only as a group of cells
cell
a single _____ has all of the items necessary to carry out life's activities
organ
a combination of two or more tissues working together to perform a specific job in the body
hooke
british scientist who first observed celsl under a microscope
chloroplast
energy-converting organelle found in plant and algae cells
organism
anythin that can live on its own
organ systems
groups of organs working together to perform particular jobs in the body
organelle
one of the structures a cell uses to live, grow, and reproduce
community
all of the populations of different species that live and interact in an area
cell wall
the cells of plants and algae have a hard ___ ___ made of cellulose
ribosomes
organelles at which amino acids are hooked together to make proteins
DNA
a cell's hereditary material
tissue
a group of similar cells that work together to do a specific job in the body
eukaryotic cell
cells that have a central nucleus and a complicated inner structure
vesicles
all eukaryotic cells have membrane-covered compartments called ____ that form when part of the cell membrane of an object pinches off
population
a group of the same kind of organisms that live in the same area at the same time
mitochondria
the cell's power plants; break down food molecules to make ATP
cell membrane
barrier between the inside of a cell and its environment
nucleolus
dark spot inside the nucleus that stores the materials that will be used later to make ribosomes
cell theory
three statements that define all living things in terms of cells
ER
the cell's delivery system (abbr.)
ATP
special molecule that provides energy for a cell's activities
ecosystem
a community and all of the nonliving thign that affect it
vacuole
a large membrane-covered chamber that stores liquids and is found in plant cells