A single celled organism lacking a nucleus.
Spiral or corkscrew-shaped prokaryote
organism that must take in organic molecules for both energy and carbon
organism that makes organic carbon molecules from carbon dioxide using energy from chemical reactions.
Organism that is photosynthetic but needs organic compounds as a carbon source
organism that uses energy from sunlight to convert it to carbon dioxide and water to carbon compounds.
organism that requires a constant supply of oxygen in order to live
An organism that cannot live in the presence of oxygen
organism that can survive with or without oxygen.
type of asexual reproduction in which an organism replicates it's DNA and divides in half, producing two identical daughter cells.
Form of sexual reproduction in which paramecia and some prokaryotes exchange genetic information
type of spore formed when a bacterium produces a thick internal wall that encloses its DNA and a portion of its cytoplasm.
Process of converting nitrogen gas into ammonia
particle made up of nucleic acid, protein, and in some cases lipids that can replicate only by infecting living cells.
Outer protein coat of a virus.
virus that infects bacteria
Process in which a virus enters a cell, makes a copy of its self, and causes the cell to burst.
Process by which a virus embeds its DNA into the DNA of the host cell and is replicated along with the host cells DNA
the viral DNA that is embedded in the host cell's DNA
Viruses that contain RNA as its genetic information.
A preparation of weakened or killed pathogens.
Compound that blocks the growth and reproduction of bacteria.
Single-stranded RNA molecules that has no surrounding capsids.
Infectious particle made up of protein rather than RNA or DNA.
The activity of a virulent virus
ability to cause disease
does not have ability to cause disease
Virus that enters cell but remains inactive for a period of time
Proteins produced by the body as a defense against viruses