is composed ofverysmallparticlescalledmolecules.各种物质,不论它是什么,都是由一些称为分子的很小的粒子构成的。 相关知识点: 试题来源: 解析 考查动词短语。句意:每一种物质,无论是什么,都是由非常小的粒子组成的。根据句意和所给词可知,这里应选composed,be composed of 表示"由…组成",为动词短语。故填...
Simply put, molecules are particles composed of two or more atoms that are chemically held together; these molecules have a specific number of atomic nuclei, and can be considered an individual particle. Whether a particle consists of only one type of atom or a variety of different atoms, it ...
What is the molecular weight of CH3(CH2) 6COOH? A compound has the empirical formula C2H3O. Its molar mass is 172.0 g/mol. What is the molecular formula? What is empirical formula mass? What is molar in chemistry? What is the empirical formula of a compound composed of?
What is a compound composed of two amino acids bonded together called? When two amino acids join together, they form a (blank). What is the name of the type of bond that forms between amino acids? What structure is the sequence of amino acids in a protein?
What is a compound composed of two amino acids bonded together called? What are the most important organic molecules for living beings? Name two common compounds that mimic estrogen and where they are found. What element is an essential component in organic compounds?
have pairs of four types of molecules called bases (nucleotides). These bases are paired as follows- the base adenine (A) is paired with the base thymine (T), the base guanine (G) is paired with the base cytosine (C). Every extremely long DNA molecule is coiled...
Mixturesare formed by just mixing or 'intermingling' (another word which means the same as 'mixing') together two or more substances.Those substances may also be referred to as 'constituents' or 'components' - and may be eitherelementsorcompounds, and be composed of eitheratomsormolecules.There...
“DNA is a group of molecules that is responsible for carrying and transmitting the hereditary materials or the genetic instructions from parents to offsprings.” This is also true for viruses, as most of these entities have either RNA orDNA as their genetic material. For instance, some viruses...
单项选择题 Analysis of its spectrum can tell not only ___ atoms or molecules a substance is composed, but ___ relative amounts they are present. A、what…what B、that…that C、of what…in what D、by that…at that 点击查看答案 你可能感兴趣...
Which polysaccharide is most similar to chitin? a. starch b. glucose c. cellulose d. glycogen What is a substance composed of two monosaccharides bonded together called? Give examples of a polysaccharide. Which of the following molecules is not a polysaccharide? a. Starch b. cellulose c. g...