Answer:
To begin, in direct relation to plasma membranes, we have the fluid mosaic model, explanation for various observations related to the structure of cell membranes. In this model, there is a lipid bilayer where protein molecules are fixed. The lipid bilayer allows the membrane to achieve elasticity. This model of the cell membrane is how scientists view the functions and parts of the cell membrane. The fluid mosaic model can also serve as an explanation for the phospholipids, cholesterol, proteins, and carbohydrates that make up the membrane. Before delving into the fluid mosaic model, one must first fully understand plasma membranes and the role that they play. The plasma membrane is the membrane in all cells that protects it from the outside environment. The plasma membrane controls materials that come and go from the cell. The membrane is mainly formed of amphiphilic or dual-loving, phospholipid molecules. The hydrophilic part of these molecules is in constant contact with the fluid inside of and surrounding the cell. The phospholipid molecule is made of a three-carbon glycerol base with two fatty acid molecules attached to two of the carbons, and a phosphate-containing group attached to the third one. This arrangement results in a polar charge. The membrane surfaces that face the inside and outside of the cell are hydrophilic. In opposition, the middle of the cell membrane is hydrophobic. Therefore, phospholipids form an effective lipid bilayer cell membrane that divides fluid within the cell from the liquid outside of the cell. In conclusion, fluid mosaic is used by scientists to view the parts of the cell membrane, which has a lot of components that render it non-permeable. (phospholipids, integral protein, peripheral protein, cholesterol, glycoproteins/lipids.)
Explanation:
Idk if this is right but hopefully it helps.
Su enlace es covalente apolar.
Explicación:
Ambas moléculas se unen para formar un compuesto estable, y alcanzar el "octeto".
El selenio tiene 6 electrones de valencia, y le faltaría dos electrones, para tener los 8 electrones, y así, cumplir su octeto, y volverse estable.
Por el contrario, el hidrógeno, se va a parecer al elemento noble más estable, el Helio (He), por lo cual, puede compartir sus electrones con el Selenio, así el Hidrógeno tendría 2 electrones, volviéndose estable, y el Selenio 8.
Sabiendo lo anterior, podemos calcular si es covalente polar o apolar, con una tabla de electronegatividad, que puedes encontrar en internet.
Restas el valor del Selenio al Hidrógeno, y el resultado que te de, lo comparas son los valores de referencia existentes, quedando como:
Se(2.6)-H(2.2)= 0.4
Covalente apolar: 0-0.4
Covalente polar: 0.5-1.6
Its nucleotides...its contains sugar(deoxyribose in DNA and ribose in RNA) phosphate and a nitrogen base(A,C,G,T)
Sedimentary rocks<span> are </span>formed<span> when </span>sediment<span> is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This </span>sediment<span> is often </span>formed<span> when weathering and erosion break down a </span>rock<span> into loose material in a source area.
That is how they are formed, now think of a way they are not formed. Hope this helps!</span>
Answer:
Two
Explanation:
A male and female cromosome
