Bacterial Structure Flashcards
What kinds of cells are bacteria?
Prokaryotic cells.
What two ways can bacteria live?
Either as independent (free-living) or as parasites (dependent upon another organism for life).
What two organelles are lacking in prokaryotic cells?
The Golgi and endoplasmic reticulum.
True or false. Prokaryotes have a nucleus.
False. Prokaryotes do not have a nucleus that houses its genetic material.
What is the nucleoid region?
It is an area of cytoplasm where the genetic material of a prokaryotic cell consists in a large DNA molecule.
What is the nucleoid region protected and encased by?
The cell membrane.
What are two examples of prokaryotes?
1) Bacteria.
2) Cyanobacteria (formerly known as blue-green algae).
True or false. All bacteria have capsules.
False. Not all bacteria are encapsulated.
True or false. Eukaryotic cells are about 10 times the size of a prokaryote.
True.
What are some examples of eukaryotes (4)?
1) Protozoa.
2) Fungi.
3) Plants.
4) Animals.
What membrane do eukaryotic cells have that prokaryotes do not have?
A nuclear membrane.
What are the three most common bacterial shapes?
1) Spherical (coccus - cocci).
2) Rod-shaped (bacillus - bacilli).
3) Spiral.
