Flashcards on Topic 1 Lesson 3

Front

Viruses are tiny non-living things that reproduce by hurting the host.

Back

They need a living cell (host) to reproduce and can cause disease by attacking cells.

Front

Vaccines are used to prevent diseases caused by viruses.

Back

Vaccines contain weakened or killed pathogens that trigger the body to produce chemicals to destroy the pathogen.

Front

Bacteria have three basic shapes.

Back

The shapes are rod, spiral, and ball.

Front

Bacteria are prokaryotic cells.

Back

They lack a nucleus and are single-celled organisms.

Front

Bacteria can be autotrophic or heterotrophic.

Back

They can survive by sheltering in place and reproduce by binary fission and conjugation.

Front

Bacteria can be both harmful and helpful.

Back

They can harm humans or be used to clean up chemical spills.

Front

Protists are eukaryotic organisms.

Back

They cannot be classified as plants, animals, or fungi and can be unicellular or multicellular.

Front

Protists can be heterotrophs or autotrophs.

Back

They cannot be seen without a microscope.

Front

Protists and termites (animal kingdom) share a common feature.

Back

Both are eukaryotes.

Front

Fungi are heterotrophs.

Back

They grow on food and can bring water to plants.