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8 Απρ 2019 · Deoxyribonucleic acid, or DNA, is a biological macromolecule that carries hereditary information in many organisms. DNA is necessary for the production of proteins, the regulation, metabolism, and reproduction of the cell.
17 Μαρ 2022 · The DNA molecule is a polymer of nucleotides. Each nucleotide is composed of a nitrogenous base, a five-carbon sugar (deoxyribose), and a phosphate group. There are four nitrogenous bases in DNA, two purines (adenine and guanine) and two pyrimidines (cytosine and thymine). A DNA molecule is composed of two strands.
A DNA Molecule Consists of Two Complementary Chains of Nucleotides. A DNA molecule consists of two long polynucleotide chains composed of four types of nucleotide subunits. Each of these chains is known as a DNA chain, or a DNA strand. Hydrogen bonds between the base portions of the nucleotides hold the two chains together .
2 Φεβ 2023 · Parts of an Animal Cell. Animal Cell Diagram. 1) Centrioles. They are paired tube-like organelle composed of a protein called tubulin. Centrioles are about 500nm long and 200nm in width that are found close to the nucleus and helps in cell division. They are also found in cilia and flagella. Functions.
9 Μαΐ 2023 · Here is a list of animal cell components and organelles and their functions: Cell Membrane : The cell membrane or plasma membrane is a selectively permeable lipid bilayer that encloses the contents of the cell and regulates the transport of materials into and out of it.
In turn, each nucleotide is itself made up of three primary components: a nitrogen-containing region known as a nitrogenous base, a carbon-based sugar molecule called deoxyribose, and a...
19 Οκτ 2020 · Overview of Animal Cells. Animals, plants, fungi, and protists are all made up of at least one eukaryotic cell. In contrast, bacteria and archaea are made up of a single prokaryotic cell. All cells are surrounded by a cell membrane (also called a plasma membrane).
