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Organisation of genetic material

Organisation of genetic material

Eukaryotic cells with nuclei measuring only a few micrometres may contain nearly 2 metres of DNA, coiled multiple times.



ģenētiskais materiāls, DNS, dezoksiribonukleīnskābe, dubultā spirāle, hromosomu, adenīns, tīmīns, citozs, guanīns, reproducēšana, purīns, pirimidīns, ūdeņraža saite, histone proteīns, nukleozoms, cilvēks, bioķīmija, Bioloģija

Saistītie vienumi

Animal and plant cells, cellular organelles

Eukaryotic cells contain a number of organelles.


Carrier of genetic information in cells.


Our gametes are haploid cells produced from diploid cells by meiosis, a special type of cell division.


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

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.

2-deoxy-beta-D-ribose (C₅H₁₀O₄)

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

Levels of biological organisation

This animation presents levels of biological organisation from the level of the individual organism to the level of cells.

Paramecium caudatum

Common ciliated eucaryotic unicellular organisms widespread in freshwaters.


The process of the decay of unstable nuclei is called radioactivity.


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

Amoeba proteus

Widespread heterotrophic unicellular organisms with constantly changing shapes

The structure of proteins

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

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