CARDS B1 ( mitochondria, cell wal, ribosome...) Flashcards
Mitochondria
they are complex organelles
performs cellular respiration (cell energy)
produce of the most energy of the cells, through the process called cellular respiration
Centriole
perform out cell division participates in the formation of cilia and fragellos. Has structures proteins how, aquitin, keratin,
Nucle/core
Storage of genetic information
DNA duplication
Synthesis and processing of messenger, transporter, and ribosomal RNA
Ribosome
performs protein synthesis in all cell types
Granular endoplasmic reticulum
stores proteins that cells use, common in cell types that are involved in intense protein synthesis, such as pancreatic cells and plasma cells. have ribosome
Non-graulous endoplasmic reticulum
doesnt have ribosome, participe in muscle contraction and synthesis of some phospholipid hormones. These organelles are found in striated muscle cells and act by accumulating and releasing calcium ions to ensure the contraction process
Lysosome
acts in intracellular digestion, ensuring the degradation of materials captured by the cell, as well as the recycling of some cellular components (autophagy).
Peroxisome
helps detoxify molecules in the bloodstream and breaks down fatty acids.
Golgi complex
modifys proteins and lipids from the endoplasmic reticulum. transports and addresses substances
Cytoplasm
It is composed of hyaloplasm and the differentiated cytoplasm that encompasses organelles and inclusions. in the hyaloplasm is where important reactions take place, such as the binding between transfer RNAs and amino acids
1-Prokaryotic cell
2-where is prokariotic cell found?
1-They lack a nucleus and their genetic material is dispersed in the cytoplasm
2- its found in bacteria and arkea
Prokariotic cell, where is found?
doesnt have nucleus, its found in animals plants, algae…
Cell membrane
its a structure that delimits the citoplasme, separating the intracellular environment from the extracellular environment. It also does the Recognition of foreign substances
Cell membrane composition
it has a lipoprotein composition. the main lipids present are the phospholipds, whose head is hydrophilic ( has an affinity for water) because it is formed by glycerol, phosphate and apolar nitrogenous molecule, linked to a hydrophobic non-polar tail (with water repulsion) formad by fatty acids
Plasma membrane specialties
Microvilli: these are folds in the plasma membrane on the surface of intestinal, that increase the absorption of nutrients.
Desmosomes: they are protein plaques attached to protein the ads that stick on cell to another, make adhesion, very present in epithelial tissue.
Interdigitations: very common in muscle cells, they serve to unite one cell to another and exchange substances.
Cell wall
It is a structure of plant cells that differentiates them from animal cells. Its main function is to prevent the plasma membrane of cells from rupturing.
Cell wall of bacteria
the cell wall of bacteria has a glycon peptide formad by carbohydrates and amino acids
Cell wall of archea
Many of them do not have a cell wall, but when has is formad by polysacharides in their cell wall
Cell wall of fungi
have chitin in their cell wall
Cell wall of algae and plants
have cellulose in their cell wall
Glycocalyx
animals don´t have a cell wall, so they have glycocalyx, which is a layer(camada) of carbohydrotes linked to protein and lipds, which provide physical and chemical protection for the plasmic membrane
Chromatin
Double strand of DNA, responsible for storing genetic information.
resume plasma membrane
The plasma membrane surrounds all cells.
The fluid mosaic model is currently used to explain the structure of the plasma membrane.
According to the fluid mosaic model, the plasma membrane is formed by a lipid bilayer in which proteins are inserted. The arrangement of the components gives it a mosaic aspect, and, as they constantly change position, it is said to be fluid.
The main function of the membrane is to ensure what enters and leaves the cell.
Substances can enter and leave the cell across the membrane through passive or active transport.
The processes of endocytosis and exocytosis ensure, respectively, the entry and exit of macromolecules and other particles.