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Chapter 5 - Cells

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prokaryotes
Organisms who cells never contain a nucleus
hypotonic solution
the concentration of solutes inside the cell is greater than the concentration of solutes outside the cell
pinocytosis
a process where a cell engulfs a food particle instead of a drop of liquid
ribosomes
Make proteins
organelles
structures that work like miniature organs, carrying out specific functions in the cell
cytoplasm
Everything between the cell membrane and the nucleus is the cell's
phagocytosis
sometimes called cell drinking
diffusion
the net movement of molecules from an area of higher concentration to an area of lower concentration
gradient
the difference between the concentration of a particular molecule in one area and the concentration in an adjacent area
nucleoli
make ribosomes, which, in turn make proteins
membrane
allows certain molecules to pass through
mitochandria
the power house of a cell
endoplasmic
Poisons, wastes, and other toxic chemicals are made harmless in the ________ reticulum, it also connects the nuclear envelope to the cell membrane
chromosomes
in the nucleus contain coded blueprints that control all cullular activity
cilia
short, hairlike, projections of locomotion
cytoskeleton
maintains the three dimensional 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 molecules across the membrane the process is called
suspended
______ in the cytosol are tiny organelles
hypertonic
In a ___________ solution , the concentration of solutes inside and outside the cell is equal.
microtubules
hollow tubes, like plumbing pipes that maintain the shape of the cell and serve as tracks for organelles to move along within the cell
isotonic solution
the concentration of solutes outside the cell is higher than the concentration of solutes inside the cell