Biochemistry Final Exam 3..docx

Biochemistry Final Exam 3.
True or False: According to the Module, a compound with a molecular mass of 1,000 g/mol is
B B B B B B B B B B B B B B B B




B considered a macromolecule. - ANS >> False
B B B B B B




True or False: Biomolecules can have only two functional groups. - ANS >> False
B B B B B B B B B B B B B




True or False: The following functional group is an alcohol. - ANS >> False
B B B B B B B B B B B B B




True or False: In a eukaryotic cell, the organelles called peroxisomes serve the purpose of digesting
B B B B B B B B B B B B B B B




B macromolecules. - ANS >> False B B B B




True or False: Carbon dioxide has a linear molecular shape AND has a bond angle of 109.5 degrees. -
B B B B B B B B B B B B B B B B B B




B ANS >> False B B




Of the following, ____________ is not a property of carbon. - ANS >> possessing five valence electrons
B B B B B B B B B B B B B B B B




Which of the following is an element not typically found in living organisms? - ANS >> He
B B B B B B B B B B B B B B B B




_____________ is a functional group found in carbohydrates. - ANS >> Alcohols
B B B B B B B B B B B




The following functional group is an example of _________. - ANS >> Ketone
B B B B B B B B B B B B




A ___________ is a chemical formula that does NOT show the C-H and C-C bonds. - ANS >>
B B B B B B B B B B B B B B B B B




B Condensed formula B




A collection of two or more macromolecules uniting is called a _______. - ANS >> Supramolecular
B B B B B B B B B B B B B B B




B complex

An organic compound with this structure, C=C, contains a ________ functional group. - ANS >> Alkene
B B B B B B B B B B B B B B B




Scientists refer to ________ as the "super glue" of the chemistry. - ANS >> C
B B B B B B B B B B B B B B




What molecule is most important for energy storage in cells? - ANS >> ATP
B B B B B B B B B B B B B




What would be the approximate size of a human cell? - ANS >> 12 μm
B B B B B B B B B B B B B B




For propane, there ________ carbon and ________hydrogen atoms. - ANS >> 3, 8
B B B B B B B B B B B B




For an organic compound, which structure is the most efficient to draw? - ANS >> Line bond
B B B B B B B B B B B B B B B B

, When writing an organic functional group, scientists often write an "R" as part of the structure. What
B B B B B B B B B B B B B B B B




B does the R indicate? - ANS >> Rest of the molecule
B B B B B B B B B B




According to the module, the study of Non-carbon compounds is referred ____. - ANS >> Inorganic
B B B B B B B B B B B B B B B




B chemistry

Which of the following is not a functional group discussed in this module? - ANS >> All of these were
B B B B B B B B B B B B B B B B B B B




B discussed.

Which number would be closest to the approximate number of ribosomes in an E. coli cell? - ANS >>
B B B B B B B B B B B B B B B B B B




B 25,000

Which of the following would most likely have a cell wall? - ANS >> Marigold flower cells
B B B B B B B B B B B B B B B B




Eukaryotes have molecules that provide protective structural. This network is called the
B B B B B B B B B B B




B _____________. - ANS >> Cytoskeleton B B B B




The molecule linked to the medical condition of gout is __________. - ANS >> Uric acid
B B B B B B B B B B B B B B B




About how many different elements are found in living organisms? - ANS >> 30
B B B B B B B B B B B B B




(Short response) Explain the common similarity in all prokaryotic and eukaryotic cells. Give a brief
B B B B B B B B B B B B B B




B explanation of the similarity. - ANS >> Each cell type has a plasma membrane that separates life from
B B B B B B B B B B B B B B B B B




B non-life. The plasma membrane acts as a barrier to most molecules but does have proteins that
B B B B B B B B B B B B B B B




B permit select molecules to cross via proteins (transporters).
B B B B B B B




(Short response) Would scientists be more likely to find an element such as O in a biomolecule, or W?
B B B B B B B B B B B B B B B B B B




B Explain which she would more likely find in biological molecule and give specific physical/chemical
B B B B B B B B B B B B B




B properties. - ANS >> She would more likely find O. Smaller elements are preferred. Smaller elements
B B B B B B B B B B B B B B B




B with smaller atomic shells are favored because they can form stable covalent bonds, allowing cells to
B B B B B B B B B B B B B B B




B form, hair to grow, and skin to protect against abrasion.
B B B B B B B B B




(Short response) What element is the basis for life? Describe at least two properties of this element
B B B B B B B B B B B B B B B B




B that permit it to serve the basis for life. - ANS >> 1. Carbon can form strong covalent bonds with a
B B B B B B B B B B B B B B B B B B B B