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Unit Guide Vocab 2

Across
Model that describes the arrangement and movement of the molecules that make up the cell membrane
Activities occurring at the cell level
Method by which molecules are moved in and out of the cell.
Condition or quality of allowing some but not all, materials to cross a barrier or membrane.
Molecule that forms the double layered cell membrane; consisting of a glycerol, phosphate group and two fatty acids.
States that all organisms are made of cells, all cells are produced by other cells, and the cell is the most basic unit of life.
Diffusion of water molecules across a semipermeable membrane from an area if higher water concentration to an area of lower concentration
Organism within the kingdom Bacteria
Basic unit of life.
Down
Movement of dissolved molecules in a fluid or gas from a region of higher concentration to a region of lower concentration
Eukaryote that is not an animal, plant, or fungus
Difference in the concentration of a substance from one location to another.
An organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus
The movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.
Movement of molecules across the cell membrane without energy input from the cell
A microscopic single-celled organism that has neither a distinct nucleus with a membrane nor other specialized organelles. Prokaryotes include the bacteria and cyanobacteria.
Regulation and maintenance of constant internal conditions in an organism
Membrane bound structure that is specialized to perform a distinct process within the cell.
An infective agent that typically consists of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host.