2 English is easier than Chinese.
3. Turkey is hotter than Britain.
4. Lions are slower than cheetahs.
1. My hair is as short than you hair.
2. English is not as easy as Chinese.
3. Turkey is not as hot than Britain.
4. Lions are not as slow as cheetahs.
I think this was taken from “Black Boy” by Richard Wright. He sees his father as a stranger. The reason for this is because his father is not home all the time. This may be the reason why they don’t connect.
Explanation:
my various meaning direction read a future article from your school paper or from newspaper pick. out the academic term used in the article and give their general and specific meaning please be guided bye the table below
The cell membrane is a selectively permeable barrier that separates the internal environment of a cell from the external environment. Small, uncharged molecules such as oxygen, carbon dioxide, and nitrogen can diffuse directly through the cell membrane.
It is made up of a phospholipid bilayer that consists of hydrophilic heads and hydrophobic tails. The hydrophobic tails face each other, creating a nonpolar region in the middle of the membrane that prevents the diffusion of most molecules. However, there are certain types of molecules that can diffuse the cell membrane directly.
Small, nonpolar molecules such as oxygen, carbon dioxide, and nitrogen are able to pass through the cell membrane by simple diffusion. They can dissolve in the nonpolar region of the membrane and cross from one side to the other without the need for a transport protein. Other small molecules like water can diffuse through the cell membrane, but at a much slower rate due to its polar nature.
On the other hand, larger molecules such as glucose, amino acids, and ions require transport proteins to cross the cell membrane. These proteins help to facilitate the movement of these molecules across the membrane, either through channels or carriers.
In conclusion, only small, nonpolar molecules can diffuse the cell membrane directly. Larger molecules require transport proteins to assist their movement across the membrane.
To know more about cell
#SPJ11
Small, uncharged substances like oxygen, and carbon dioxide, and hydrophobic molecules like lipids can directly diffuse through the cell membrane in a process known as simple diffusion. Larger molecules like glucose, amino acids, and polar substances, as well as ions, cannot; they need special means to pass through, often utilizing specific protein channels via facilitated transport.
The molecules that can directly diffuse through the cell membrane are mainly small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules like lipids. This process is known as simple diffusion, where molecules move down their concentration gradient, from an area of high concentration to an area of lower concentration. The cell's lipid bilayer structure allows these types of substances to pass.
However, larger molecules like glucose, amino acids, and polar substances can't readily pass through the membrane due to their size or charge. They require special means of penetrating plasma membranes, often through specific protein channels in a process known as facilitated transport. Moreover, ions such as sodium, potassium, calcium, and chloride also need these special means because their charge prevents them from diffusing directly through the membrane's mosaic.
#SPJ12