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Prokaryotes

Organisms whose cells never contain a nucleus

Hypotonic Solution

The concentration of solutes inside the cell is greater than the concentration of solutes outside the cell

Phagocytosis

A process where a cell engulfs a food particle instead of a drop of liquid

Ribosomes

Proteins are made by this

Organelles

Structures that work like miniature organs, carrying out specific functions in the cell

The Cell's Cytoplasm

Everything between the cell membrane and the nucleus

Pinocytosis

Sometimes called cell drinking

Diffusion

The net movement of molecules from an area of higher concentration to an area of lower concentration

Concentration Gradient

The difference between the concentration of a particular molecule in one area and the concentration in an adjacent area

Nucleoli

Makes ribosomes, which, in turn, builds proteins

Semipermeable Membrane

Only allows certain molecules to pass through

Mitochondria

The "power-house" of a cell

Endoplasmic Reticulum

Poisons, wastes, and other toxic chemicals are made harmless in this. It also connects the nuclear envelope to the cell membrane

Chromosomes

In the nucleus contsin coded "blueprints" that control all cellular activity

Cilia

Are short, hairlike projections for locomotion

Cytoskeleton

Maintains a three- dimension structure of the cell and helps the cell move

Osmosis

The diffusion of water across a semipermeable membrane

Active Transport

When energy is used to transport molecule across the membrane

Suspended In The Cytosol

Are tiny organelles

Isotonic Solution

The concentration of solutes inside and outside the cell is equal

Microtubules

Are hollow tubes, like plumbing pipes that maintain the shape of the cell and serve as tracks for organelle sto move along within the cell

Hypertonic Solution

The concentration of solutes outside the cell is higher than the concentration of solutes inside the cell

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