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3 parts of cell theory
a.) all things are composed of living cells
b.) cells are the basic units of structure and function in all living things
c.) all cells come from preexisting cells
How you are able to recognize a prokaryotic cell under a microscope:
the absence of a nucleus
Eukaryotes
cells that enclose their DNA in a nucleus
What all cells have in common
a cell membrane; cytoplasm; ribosomes; DNA
All Bacterial Organisms are considered…
prokaryotic
If a cell has a large membranous structure with a dense dark spot in it, this cell is
an eukaryotic cell with a nucleus
Nucleus
contains and stores the DNA
Relationship between the nucleus and the cytoplasm
the cytoplasm surrounds and suspends the nucleus
Ribosome production
what the nucleus is the site for
Lysomes
breaks down other organelles and other cells
Vacuoles
stores salt and water
Ribosomes
structure that makes proteins, these are made in the NUCLEOLUS
Golgi Apparatus
organelle that modifies and sorts proteins
Mitochondrion
organelle that converts chemical energy in food to compounds that the cell can use to make energy
Mitochondrion and Chloroplast
two organelles that are involved in energy conversion
Chloroplast
organelle specific to plant cell, never animal cells
function of the cell wall
to protect and support the cell
Why is the cell wall different to the cell membrane
the cell wall is rigid and provides structural support. The cell membrane is flexible and controls the movement of substances in and out of the cell
Animal cells…
never have a cell wall
Primary function of the cell membrane
to control and regulate the movement of substances in and out of the cell
Proteins
the pumps and channels of the cell membrane
Cell membrane
surrounds all prokaryotic and eukaryotic cells
where are ribosomes made
in the nucleolus
How the rough er is easy to identify
by the presence of ribosomes
Where protein synthesizers are made and where they are located
in the ribosomes; cytoplasm
Nucleolus
most dense area of the cell
where the cells genetic information is found
in the chromosomes
valcuole
largest structure in a plant cell
when the cell needs a lot of protein molecules, it needs a lot of
ribosomes
Note
Flashcard