Organic compounds are present in all living cells. They allshare the following characteristic:(a) Are used in protein synthesis(b) Are biological catalysts(c) Are composed of carbon atom backbone surrounded bychloride atoms(d) Are hydrophobic(e) Are composed of carbon atom backbone surrounded byhydrogen atoms
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Organic compounds are present in all living cells. They all
share the following characteristic:
(a) Are used in protein synthesis
(b) Are biological catalysts
(c) Are composed of carbon atom backbone surrounded by
chloride atoms
(d) Are hydrophobic
(e) Are composed of carbon atom backbone surrounded by
hydrogen atoms
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- Carbon is particularly well suited to be the backbone of organic molecules because (a) it can form both covalent bonds and ionic bonds (b) its covalent bonds are very irregularly arranged in three-dimensional space (c) its covalent bonds are the strongest chemical bonds known (d) it can bond to atoms of a large number of other elements (e) all the bonds it forms are polarWhich of the following elements is mismatched with its properties or function? (a) carbon—forms the backbone of organic compounds (b) nitrogen—component of proteins (c) hydrogen—very electronegative (d) oxygen—can participate in hydrogen bonding (e) all of the above are correctly matchedGive a clear handwritten answer of this in which who have long chain of atoms in which molecules contain given below..?Explain.. (A) Lipids (B) DNA (C) Proteins (D) Amylose
- Which of the following bonds and properties are correctly matched? (a) ionic bonds; are strong only if the participating ions are hydrated (b) hydrogen bonds; are responsible for bonding oxygen and hydrogen to form a single water molecule (c) polar covalent bonds; can occur between two atoms of thesame element (d) covalent bonds; may be single, double, or triple (e) hydrogen bonds; are stronger than covalent bonds72. Use Figure 2 to answer the following questions. (1.4) KU HOCH, OH C3 H C H С — H ОН ОН ribose Figure 2 (a) Which type of molecule does this diagram represent? (b) What is the chemical formula for this molecule? of macromolecules does this (c) What group molecule belong to? エーO エ-O(a) A homogeneous mixture which contains water as a solvent is called (b) Ni(CIO4)2-6H2O is hydrated whereas Ni(CIO.)e is (c) NaCl contains an bond whereas O2(g) contains a bond (d) A homogeneous mixture has a and composition (e) Temperature is an because it does not depend on the amount of substance (f) The maximum number of electrons that an orbital can have is (9) The energy of the lowest level in the H atom is (h) Arrange the following subshells in the H atom in order of increasing energy: 3s 4d 2р 4f 3d 2s 3p () Wavelength and frequency of radiation have an relationship
- Suppose you had an organic molecule such as cysteine (see Figure 4.9,sulfhydryl group example), and you chemically removed the --NH2 group and replaced it with --COOH. Draw this structure. How would this change the chemical properties of the molecule? Is the central carbon asymmetric before the change? After?Which of following functional groups are present on this molecule: a) aldehyde b) ketone c) carboxylic acid d) both a and c e) a, b and c O OHA monosaccharide designated as an aldehyde sugar contains(a) a terminal carboxyl group (b) an internal carboxyl group(c) a terminal carbonyl group (d) an internal carbonyl group(e) a terminal carboxyl group and an internal carbonyl group
- While waiting at an airport, Neil Campbell once overheard this claim: "It's paranoid and ignorant to worry about industry or agriculture contaminating the environment with their chemical wastes. After all, this stuff is just made of the same atoms that were already present in our environment." Drawing on your knowledge of electron distribution, bonding, emergent properties, complete a short essay countering this argument. Match the words in the left column to the appropriate blanks in the sentences on the right. electrons electron distribution harm living organisms valence electrons charge distribution atoms basic atoms molecules electron shells interact with other molecules of each element have a characteristic number of The number of form, so the chemical reactivity of an atom arises from its emerge from the arrangement of their constituent atoms and of the bonds between them. The Thus, a wide variety of same determine its highly specific ability to Reset Help arranged in determines…The “octet rule” in chemistry helps predict the types of bonds thatatoms will form. In general, an atom will be most stable if it fills itsouter shell of 8 electrons. Atoms with fewer than 4 valence electronstend to donate electrons and those with more than 4 valence electronstend to accept additional electrons; those with exactly 4 can do both.Using this rule, determine what category each of the followingelements falls into: N, S, C, P, O, H, Ca, Fe, and Mg. (You will needto work out the valence of the atoms.)Which of the following is a key difference between amylose and cellulose? O amylose is a branched polymer, cellulose is linear amylose contains a(1,4) glycosidic bonds, cellulose contains B(1,4) bonds O amylose contains D-glucose, cellulose contains L-glucose O amylose contains fructose, cellulose contains glucose