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DNA

DNA

Carrier of genetic information in cells.

Chemistry

Keywords

DNA, DNA-helix, DNA chain, genetic material, deoxyribonucleic acid, nucleic acid, adenine, thymine, cytosine, guanine, polynucleotide, nitrogen-containing base, deoxyribose, phosphoric acid, nucleotide, base pairs, genetic code, Watson, Crick, Franklin, Wilkins, right-handed, complementary, nucleus, chemistry, biochemistry, biology

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2-deoxy-beta-D-ribose (C₅H₁₀O₄)

A component of DNA, it contains one less hydroxyl group than β-D-ribose.

Organization of genetic material

Eukaryotic cells with nuclei measuring only a few micrometers may contain nearly 2 meters (6.6 ft) of DNA, coiled multiple times.

Phosphoric acid (H₃PO₄)

It is also used as a food additive, limescale and rust remover.

Purine (C₅H₄N₄)

A heterocyclic aromatic organic compound, its derivatives include guanine and adenine.

Pyrimidine (C₄H₄N₂)

A heterocyclic organic compound, its derivatives are thymine, cytosine and uracil.

RNA

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

Amoeba proteus

Widespread heterotrophic unicellular organisms with constantly changing shapes

Bacteria (advanced)

Bacteria are unicellular organisms that have no cell walls and are a few micrometers in length

Genome editing

Genome editing is a type of genetical engineering which results in changes in the genome of a living organism. This animation introduces one of the best...

Mitosis

Mitosis is the process by which a eukaryotic cell divides into two cells and the number of chromosomes remains unchanged.

Phosphate ion (PO₄³⁻)

A compound ion formed when a phosphoric acid molecule releases a proton.

Prenatal development

This animation demonstrates the development of the human embryo and fetus.

Tardigrade

Tardigrades can survive in extreme environments, they can even stay alive in outer space.

The structure of prokaryotic and eukaryotic cells

There are two basic cell types: prokaryotic and eukaryotic cells.

Animal and plant cells, cellular organelles

Eukaryotic cells contain a number of organelles.

Bacteria (spheres, rods, spirals)

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

Fibroin

Fibroin is a fibrillar protein excreted by silkworms.

Polymerization of ethene

Polymerized ethylene is known as polyethylene, a type of plastic.

Viruses

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

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