The complexity and variety of organic A) the chemical versatility of carbon atom

Question

The complexity and variety of organic A) the chemical versatility of carbon atoms. B) the variety of rare elements in organic molecules. C) the fact that they can be synthesized only in living organisms. D) their interaction with water E) their tremendously large sizes. Differences among organisms are caused by A) large differences in elemental composition from organisms to organism B) differences in the types and relative amounts of organic molecules synthesized by each C) differences in the elements that bond with carbon in each organism. D) differences in the sizes of the organic molecules in each organism E) differences in inorganic compounds present in each organism Stanley Miller's 1953 experiments proved that A) life arose on Earth from simple inorganic molecules. B) organic molecules can be synthesized abiotically under conditions that may have existed co early Earth. C) life arose on Earth from simple organic molecules, with energy from lightning and volcanoes D) the conditions on early Earth were conducive to the origin of life. E) the conditions on early Earth were conducive to the abiotic synthesis of organic molecules A carbon atom is most likely to form what kind of bond(s) with other atoms A) ionic B) hydrogen C) covalent D) covalent bonds and hydrogen bonds E) ionic bonds, covalent bonds, and hydrogen bonds Why are hydrocarbons insoluble in water? A) The majority of their bonds are polar covalent carbon-to-hydrogen linkages B) The majority of their bonds are nonpolar covalent carbon-to-hydrogen linkages. They are hydrophilic D) They exhibit considerable molecular complexity and diversity. E) They are lighter than water A compound contains hydroxyl groups as its predominant functional following group. Which of the following statements is true concerning this compound? A) It lacks an asymmetric carbon, and it is probably a fat or lipid B) It should dissolve in water. C) It should dissolve in a nonpolar solvent. D) It won't form hydrogen bonds with water. E) It is hydrophobic

Explanation / Answer

Answer 12 is A

complexity in organic molecule is due to verstile nature of carbon atoms because carbon is tetracovalent (have 4 electron in its outer most shell) and have power of catenation ie forming long carbon chains .

Answer 14 is A

stanley and miller stated that life arose on earth from simple inorganic molecule . They used water,methane ,ammonia and hydrogen for this experimrnt.

Answerv15 is c

carbon always forms covalent bond with other atoms . covalent bond is formed by sharing of electron . carbon have 4 electron in its outermost shell it always need 4 more so it mutually share its electron with other atom.

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