Page 26 - Chapter 3: Cells and Tissues

Microvilli Tiny hairlike projections
that increase gratly the area
for absorption.
Flagella long, hairlike projections;
the sperm has a flagellum
that allows it to swim. Half
of the population has this
organelle
Rough Ribosomes attach to this
endoplasmic structure in order to
reticulum synthesize new proteins

Smooth Role in cholesterol synthesis
endoplasmic and fat metabolism. It
reticulum produces new membranes
for the cell

Movement
Across the Cell
Membrane
Passive Diffusion is the movement of a
mechanisms substance from an area of
greater concentration to
mechanisms an area of lesser
require no input concentration
of energy (ATP).

Requires a helper
Facilitated diffusion molecule to increase the
rate of diffusion

Involves the diffusion of
Osmosis water from an area with
more water to an area of
less water

the movement of water