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This starts with understanding the structure of the cell.
The outermost part of the cell is the cell membrane, and its structure is mainly maintained by lipids and proteins.
The innermost part is the nucleus, which also has a membrane structure, and inside the membrane is the protein grid, intranuclear solution, chromatin, etc., which maintain the entire nuclear structure. In other words, water, proteins, and inorganic salt ions are the building blocks of the nucleus.
The part between the nucleus and the cell membrane is the cytoplasm, which is mainly a slurry in a solution state, and then many structures such as mitochondria surrounded by membranes. These membranes have a similar material composition to cell membranes. In other words, water, proteins, lipids, and inorganic salts are also building blocks of the cytoplasm.
With regard to sugars, their role in forming cells is mainly played on the cell surface. The sugars on the cell surface are involved in making up the special surface of the cell.
Many inorganic salts are dissolved in water and are important components of intracellular and extracellular solutions, and of course, they are involved in the formation of cells and even individuals along with water.
However, vitamins, which are present in very small quantities in the human body, are often involved in the metabolic processes of cells as coenzymes for some enzymes, rather than in the composition of cellular structures.
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Inorganic salts in cells are generally in an ionic state, but vitamins don't seem to be the difference.
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Cells are made up of various elements and compounds.
Compounds include both inorganic and organic.
Inorganics: water and inorganic salts.
Organics: sugars, lipids, proteins, nucleic acids.
PS: Vitamins are organic, but not all cells contain them.
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Water, lipids, inorganic salts, proteins.
Whereas, inorganic salts are proteins or lipids.
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Cells are made up of various elements and compounds.
Compounds include both inorganic and organic.
Inorganics: water and inorganic salts.
Organics: sugars, lipids, proteins, nucleic acids.
PS: Vitamins belong to organic matter, but orange wilt is not the only one contained in all the cells.
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The main substances that make up cells are: water accounts for 85% to 90%, inorganic salts account for 1% of 1%, protein accounts for 7% to 10%, lipids account for 1% to 2%, and carbohydrates and nucleic acids account for 1% of 1%.
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This is an indispensable element of the human body.
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This question is quite classic, but it's a pity that the landlord's question missed a word.
The original question asked about the main components of the cell membrane, and the answer was a, the phospholipid bilayer, embedded with proteins.
If you ask about the main components of cells, then all four answers are incorrect.
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The main component that makes up cells is water.
The compounds that make up cells can be broadly divided into: inorganic compounds and organic compounds. Among them inorganic compounds, including water and inorganic salts; Organic compounds, including proteins, nucleic acids, sugars, and lipids.
Water: 80 to 90 percent of the cell's pack.
Inorganic salts: 1 to 1 percent of the cell's package.
Protein: 7 to 10 percent of the cell's package.
Lipids: 1 to 2 percent of the cell's envelope.
Carbohydrates and nucleic acids: 1 to 1 percent of the cell's envelope.
The compounds that make up the cell have the highest amount of water. That is, the main component that makes up the cell is water.
The substances in the cell can be divided into two categories: one is relatively small in molecule, generally does not contain carbon, such as water, inorganic salts, oxygen, etc., this kind of substances are inorganic; One is relatively large molecules, generally containing carbon, such as sugars, lipids, proteins and nucleic acids, which are organic substances >>>More
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