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3423045
Chemical components of the cell
Descrição
CRISTAL AIMEE
Sem etiquetas
cell biology
chemical
compounds
Mapa Mental por
Cristal Aimeé Jiménez García
, atualizado more than 1 year ago
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Criado por
Lau Ibañez
mais de 8 anos atrás
Copiado por
Cristal Aimeé Jiménez García
mais de 8 anos atrás
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Resumo de Recurso
Chemical components of the cell
Living cells compound of atoms
Atoms have core with neutrons and protons(+) surrounded electron
The number of electrons in an atom = number of protons of the core
Living cells are composed of C.,H,O,N
Living organisms contain sugars, aminoacids, fatty acids and nucleotides
Sugars are a primary source of chemical energy for cells.
Principal function: store energy
glucolisis
citric acid cycle
photosyntesis
Examples:
monosacharides
glucose
polisacharides
oligosacharides
Fatt acids are important to formation of cell membranes
hydrophobic region and carboxilic acid
phospholypids
bilayer
Nucleotides are important for energy transfer (RNA, DNA)
C, A, T, G, U
nytrogen cycle
Protein molecules (RNA / DNA) are synthesized by condensation repetitive reactions
aminoacids
alpha helix, beta sheets
Molecule: two or more atoms joined by chemical bonds
Ionic bond: the atom gives up electrons to another. Its a type of electrostatic attraction
Covalent bond: two atoms share an electron pair. Different binding strength
Polar covalent bond: When the electron pair is shared unequally
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