Answer:
Properties Of Carbon :
Explanation:
Carbon:
Symbol: C
Electronic Configuration: 2 , 4
Valency : 4 (Tetra-valency)
Occurrence in nature →Earth's crust → 0.02% in the form of minerals like carbonates, coal, petroleum.
In atmosphere -0.03% in carbon dioxide is ( gaseous form)
Properties of carbon:
- Carbon forms Covalent is bonding and Covalent compounds wwhich do not conduct electricity.
- Carbon has three allotropes i.e Diamond, Graphite and Fullerenes.
- In diamond carbon atoms bonded together in tetrahedral lattice arrangement.
- In graphite carbon atoms are bonded together in sheets of hexagonal lattice.
- In Fullerenes ccarbon atoms are bonded together in spherical, tubular, or ellipsoidal forms.
- Carbon plays a major role in organic compounds.
- Carbon is a Tetravalency. (valency :4)
- So that it is easily share the electrons so that it gives a possibility of large number of compounds. Carbon compounds are also called as organic compounds. Carbon compounds are also called organic compounds.
In spherocytosis, there is a defect in the membrane proteins of the red blood cells, specifically ankyrin and spectrin. These membrane proteins contribute to the biconcave shape of red blood cells therefore the loss of these proteins will lead the red blood cells to lose its biconcave shape--leading to abnormally shaped red blood cells (spheres) hence the name. This can lead to premature destruction of red blood cells and jaundice due to hyperbilirubinemia. Spherocytes do not hold oxygen and carbon dioxide well as spherocytes have a decreased surface area.
Answer:
D
Explanation:
A robin building a nest is not learned or taught like the others. It is just instinctive for robins to build nests.
<span>Narrow junctions and desmosomes have different structures. Narrow junctions are made of a protein arranged inside the membrane. There are many intersecting lines that cause the cells to be sealed and together. Desmosomes contain the protein cadherin. There are cadherins in each cell and they join at this point sealing the cells together, the tight junctions have the function of preventing the materials that circulate between the cells. The desmosomes provide binding sites for the cells to be attached.</span>
