biology lab test 3
Terms
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- who was the first to discover cells?
- robert hooke
- why did he name these units cells?
- because they reminded him of small cubicles monks lived in
-
-all organisms are composed of one or more cells
-the cell is the basic living unit of organization
-all cells arise from pre-existing cells (by division...
are all parts of what? - cell theory
- how are cells made?
- from other cells
- does spontaneous generation occur when making cells?
- no
- defines the boundary of the living material
- plasma membrane
- stores genetic information
- dna
- includes everything inside the plasma membrane that is not part of the dna region
- cytoplasm
- all cells have...
-
-dna
-plasma membrane
-cytoplasm - has dna but no defined nucleus
- prokaryote
- regulates what can come in and out
- plasma membrane
- before
- pro
- true
- eu
- those with a clearly defined nucleus and cell organelles
- eukaryotic
- those without these structures
- prokaryotic
- meaning kernel, referring to the nucleus
- karyon
- before a nucleus
- prokaryotic
- true nucleus
- eukaryotic
- a region of cytoplasm not bounded by a membrane
- nucleoid
- a membrane-bound compartment within the cytoplasm
- nucleus
- only plant cells have...
-
-chloroplast
-central vacuole
-cell wall - what type of cells are prokaryotic?
- bacteria
- plant and animal cells are
- eukaryotic
- both plant and animal cells have a
- plasma membrane
- makes plant cell square
- cell wall
- a structure different from the wall of plant cells but serving the same primary function
- cell wall
- is flat against the cell wall and may be difficult to see
- plasma membrane
- the small black dots in the cytoplasm which give the cytoplasm its granular appearance
- ribosomes
- a relatively electron-transparent region containing fine threads of dna
- nucleoid