chapter 4 test banks 2024/2025 updated Questions And Answers 100% correct Verified

1) The element present in all organic molecules is ________. A) hydrogen B) oxygen C) carbon D) nitrogenC) carbon 2) The complexity and variety of organic molecules is due to ________. A) the chemical versatility of carbon atoms B) the variety of rare elements in organic molecules C) the diverse bonding patterns of nitrogen D) their interaction with waterA) the chemical versatility of carbon atoms 3) The experimental approach taken in current biological investigations presumes that ________. A) simple organic compounds can be synthesized in the laboratory from inorganic precursors, but complex organic compounds like carbohydrates and proteins can be synthesized only by living organisms B) a life force ultimately controls the activities of living organisms, and this life force cannot be studied by physical or chemical methods C) living organisms are composed of the same elements present in nonliving things, plus a few special trace elements found only in living organisms or their products D) living organisms can be understood in terms of the same physical and chemical laws that can be used to explain all natural phenomenaD) living organisms can be understood in terms of the same physical and chemical laws that can be used to explain all natural phenomena