These are bacteria that transform energy from sunlight into energy that can be used by cells

Producers

These are the cells that viruses infect in order to make copies

Host cells

These organisms drift in water instead of swimming through it.

plankton

These get energy by breaking down the chemicals in dead or decaying organisms and recycling them.

These are animal-like protist that get their energy These are animal-like protist that get their energy. By eating other organisms, or decaying parts of other organisms.

Protozoa

These organisms are able to live in harsh, extreme environments.

Archaea

This name applies to both multi-cellular protist and single-celled protist that contain chlorophyll and use sunlight as an energy source.

Algae

These live in very close relationships either inside or on the surface of other organisms.

Parasites

These can only be seen with the aid of a microscope.

Microorganisms

Single-celled organisms reproduce by this process.

Binary fission

This is a small collection of genetic material enclosed in a protein shell.

Virus

These life forms are the simplest kind of life known on Earth

Bacteria

Scientists divide the organisms they identify into these groups.

Kingdoms

Single-celled organisms that live in deep sea vents or beneath ice belong to this group.

Archaea

Some of these organisms harm their hosts while others are helpful to their hosts or do not affect them.

Parasites

These protists are producers and contain chlorophyll

Algae

These bacteria break down dead matter for use by other organisms.

Decomposers

These bacteria are a food source for organisms that cannot make their own food.

Producers

Examples of this are the paramecium and the amoeba.

Protozoa

In this material from one cell is broken apart into two cells.

Binary Fission

Some of these are made of just one cell.

Microoganisms

Some viruses use these as a factory that produces new viruses.

Host cells