Biochem Final Exam

T/F: According to the module, a compound with a molecular mass of 1,000 g/mol is considered a macromolecule. - correct answer false macromolecule 5,000 g/mol T/F: Biomolecules can have two or more different functional groups. - correct answer true T/F: The following group is an amine. C2H5NH2 - correct answer true T/F: In a eukaryotic cell, the organelles called peroxisomes serve the purpose of digesting macromolecules. - correct answer false peroxisomes degrade dangerous/hazardous molecules, lysosomes degrade macromolecules T/F: In a eukaryotic cell, the organelles called lysosomes serve the purpose of digesting macromolecules. - correct answer true T/F: Carbon dioxide has a linear molecular shape AND has a bond angle of 109.5 degrees. - correct answer false linear shape = 180 degrees Of the following, ___ is not a property of carbon. Forming ionic bonds Forming cyclic structures Forming multiple bonds Forming bonds with oxygen Bonding in long chains - correct answer Forming ionic bonds Which of the following is an element not typically found in living organisms? Br Ca H S Na - correct answer Br What are the functional groups found in carbohydrates? - correct answer carbonyls (C=O) alcohol/hydroxyls (-OH) ketones aldehydes What is a ketone? - correct answer carbonyl group bonded to 2 carbons A ___ is a chemical formula that shows how the atoms of a molecule are bonded to one another. - correct answer Kekule' structure A _____ is a chemical formula that does NOT show the C-H and C-C bonds. - correct answer condensed formula A collection of two or more macromolecules uniting is called a ___. - correct answer supramolecular complex An organic compound with this structure, C=C, contains a ___ functional group. - correct answer alkene What element has been called the superglue of the chemical world? - correct answer carbon (C) What molecule is the most important for energy storage in cells? - correct answer ATP What would be the approximate size of a human cell? - correct answer 12 μm For pentane, there are ___ carbon and ___ hydrogen atoms. - correct answer 5; 12 For butane, there are ___ carbon and ___ hydrogen atoms. - correct answer 4; 10 For an organic compound, which structure is the most efficient to draw? - correct answer line bond When writing an organic functional group, scientists often wrist an "R" as part of the structure. What does the R indicate? - correct answer rest of the molecule According to the module, the study of carbon compounds is referred to as ___. - correct answer organic chemistry The ___ functional group was NOT discuss in this module. alcohol amine aromatic thiol all of these were discussed - correct answer all of these were discussed Which number would be closest to the approximate number of ribosomes in an E. coli cell? 9 38 400 1,500 26,000 - correct answer 26,000 Which of the following would most likely have a cell wall? monkey cells snake cells red algae cells human red blood cells all of the above - correct answer red algae cells Eukaryotes have molecules that provide a protective structure. This network, which is found in all eukaryotes, is called the ___. - correct answer cytoskeleton What is the molecule responsible for gout? - correct answer uric acid About how many different elements are found in living organisms? - correct answer 30 Explain the common similarity between prokaryotic and eukaryotic cells in at least 2 sentences. - correct answer The fundamental similarity between prokaryotic and eukaryotic cells is the presence of a plasma membrane. This structure separates life from non-life. It acts as a barrier to the surrounding environment, but contains proteins that permit select molecules to enter and exit the cell. Would a scientist be more likely to find an element such as O in a biomolecule or W? Explain which they would more likely find and give specific physical/chemical properties. - correct answer A scientists would