-
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
So the answer is: inorganic; Organic matter.
-
Most of the elements that make up the cell exist in the form of compounds, and the slag of the compound that makes up the cell includes inorganic compounds and organic compounds. Inorganic compounds include water and inorganic salts, and organic compounds include sugars, lipids, proteins, and nucleic acids.
Some elements can be stable in the form of elemental substances, such as sulfur S8, which are found in elemental form in the genera Chromomycetes, Macromonas, and Thiobacterium.
-
Your question is obviously a thought through.
In fact, everything that is "biologically active" is specific to living organisms. Active substances include proteins, sugars, fatty acids and nucleic acids, as well as their small molecule building blocks. Many chiral compounds such as amino acids, only a certain configuration is biologically specific, such as L-amino acids and so on.
The inorganic matter in the cell is certainly not specific to living things, because in nature it can also be seen in non-living organisms.
-
No. The chemical elements that make up cells can be found in inorganic nature, and one element at each step is unique to the cell.
-
Answer: Although cells are the structural and functional units that make up living organisms, in junior high school, we learned from textbooks that there are plants, animals, bacteria, and fungi, but viruses are not composed of cells in the Zen school, but are composed of internal genetic material and protein shells
Therefore, the answer is entitled " ".
-
Answer B Organisms are always constantly exchanging substances with the external environment, selectively taking various substances from inorganic nature to compose themselves, whether they are the same organisms or different organisms, the types of chemical elements that make up their cells are roughly the same, but the content of various elements that compose them is different, so they can be divided into macroelements and trace elements. All the elements that make up living organisms are found in inorganic nature, and there are no elements specific to cells. Sun Tangerine.
-
The compounds that make up the cell include organic matter and inorganic salts, the non-organic substances include water and inorganic salts, and the organic matter includes sugars, lipids, proteins, nucleic acids, etc., so the compounds that make up the cell include water, inorganic salts, sugars, lipids, proteins, and nucleic acids
So the answer is: water, salts, sugars, lipids, proteins, and nucleic acids.
-
a. In different organisms, the types of chemical elements that compose them are generally the same, but the content is different, and a is correct;
b. Since the carbon chain is the basic skeleton of organic matter, the most basic element that makes up living organisms is carbon, b is correct;
c. In different organisms, the types of chemical elements that compose them are generally the same, and the content is different, and C is wrong;
d. The basic elements that make up an organism are C, H, O, N, and D are correct Therefore, c