cell structure Flashcards
is one feature common to all cells
cell membrane
The area of the cell between the nucleus and the cell
membrane
cytoplasm
a watery mixture of ions,
enzymes, RNA, and other dissolved substances.
cytosol
often referred to as the headquarters of
the cell, controls all cell activity by regulating what
proteins are made.
nucleus
is an informational molecule that
specifies the “recipe” for every protein a cell can make.
DNA
that separates the nucleus from the
cytoplasm.
nuclear envelope
a dense spot that assembles the components of ribosomes
nucleolus
the workers that
manufacture proteins
ribosome
is a network of
sacs and tubules composed of membranes
endoplasmic reticulum
Close to the nucleus, the membrane surface is
studded with ribosomes making proteins that
enter the inner compartment of the ER
rough
endoplasmic reticulum
houses enzymes that detoxify drugs and
poisons.
smooth endoplasmic reticulum
is a stack of flat,
membrane-enclosed sacs that functions as a
processing center.
Golgi apparatus
are organelles produced by the Golgi
apparatus that contain powerful protein digesting
enzymes.
Lysosomes
are sacs that form by the
fusion of multiple vesicles.
Vacuoles
They originate at the endoplasmic reticulum and contain enzymes that
digest and then oxidize certain toxic molecules.
Peroxisomes
are often
called the powerhouses or energy factories of the
cell.
Mitochondria
the cell’s main
energy-carrying molecule
adenosine triphosphate
