Viruses have some, but not all, of the characteristics of living things.
Organisms may not exhibit all of the characteristics of life at all times.
Reproduction can occur asexually or sexually in living things.
Reproduction is defined as an increase in the size of an organism.
Living things store metabolic energy in the form of chemicals such as ATP.
Composed of tubulin
Composed of peptidoglycan
Solid, rigid protein structures.
A means of locomotion.
Both fimbrae and glycocalyces
Treponema is an example of a bacterium that has an endoflagellum.
Prokaryotic flagella are anchored to the cell wall by means of the basal body.
A ʺrunʺ results from counterclockwise movement of the flagellum.
Prokaryotic flagella are composed of tubulin.
Prokaryotic flagella can rotate 360 degrees.
A bacterial cell will usually have only one or two pili.
Pili facilitate the transfer of DNA among bacterial cells
Not all bacteria have pili.
Pili are long, hollow tubules.
Pili are longer than fimbriae and flagella.
Cell walls composed solely of amino acids.
the absence of a cytoplasmic membrane.
The presence of mycolic acid in their cell walls.
The absence of a cell wall.
Both active transport and group translocation
Osmosis stops when the system reaches equilibrium
During osmosis, water crosses to the side of the membrane with a lower solute concentration.
Osmosis requires a selectively permeable membrane
Cells placed in hypotonic solutions will gain water
Crenation results when cells are placed in a hypertonic solution.
Transfer of genetic material between cells.
Anchoring cells to each other.
Protection against dehydration
Strengthening the cell surface
Cellular recognition and communication.
Waste products and secretions are exported from the cell during endocytosis.
Phagocytosis is a type of endocytosis in which liquids are brought into the cell.
These processes occur in both prokaryotes and eukaryotes.
Endocytosis produces a structure called a food vesicle.
Endocytosis is a form of passive transport, whereas exocytosis is a form of active transport.
Centrioles are found in a region of the cell called the centrosome.
Centrioles are believed to play a role in cellular processes such as mitosis and cytokinesis.
Centrioles are composed of microtubules.
The structure of centrioles is similar to that of eukaryotic flagella and cilia.
Centrioles are found in all organisms except prokaryotes.
Both ribosomes and centrioles
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