Viruses

Viruses

Viruses consist of protein and DNA or RNA; they reprogram infected cells to produce more viruses.

Biology

Keywords

virus, infection, droplet infection, disease, tobacco mosaic, bacteriophage, HIV, , AIDS, phage, capsid, genetic material, DNA viruses, RNA viruses, DNA, RNA, lipid membrane, host cell, helical, icosahedral, binal, virology, biology

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Bacteria (spheres, rods, spirals)

Bacteria occur in a wide range of shapes, including spheres, rods and spirals.

Amoeba proteus

Widespread heterotrophic unicellular organisms with constantly changing shapes

DNA

Carrier of genetic information in cells.

Euglena viridis

Unicellular eukaryotes living in freshwaters, capable of feeding autotrophically and heterotrophically.

Genome editing

Genome editing is a type of genetic engineering which results in changes in the genome of an organism. This animation presents one of the best-known genome...

Paramecium caudatum

Common ciliated eucaryotic unicellular organisms widespread in freshwaters.

RNA

A polynucleotid made up of phosphoric acid, ribose, and nucleobases (cytosine, uracil, adenine and guanine).

Secondary structure of proteins

Polypeptide chains are composed of amino acids and can appear in alpha-helix or beta-sheet form.

Structure of proteins

The structure and arrangement of polypeptide chains affects the spatial structure of proteins.

The Black Death (Europe, 1347–1353)

The bacterial disease known as the bubonic plague is one of the deadliest infectious diseases in the history of mankind.

Animal and plant cells, cellular organelles

Eukaryotic cells contain a number of organelles.

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