Download Biochemistry Exam Questions and Answers: CHEM 210 Module 1 and more Exams Nursing in PDF only on Docsity!
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CHEM 210 Biochemistry Module 1 Exam Portage
Learning Questions and Verified Answers, 100% Pass
Question 1
3 / 3 pts True or False: According to the Module, a compound with a molecular mass of 3,000 g/mol is considered a macromolecule. FALSE True or False: Biomolecules can have only two functional groups. FALSE
Question 3
0 / 3 pts True or False: The following functional group is an amide. FALSE True or False: In a eukaryotic cell, the organelles called peroxisomes serve the purpose of digesting macromolecules. FALSE
Question 6
3 / 3 pts True or False: Carbon dioxide has a linear molecular shape AND has a bond angle of 120 o. FALSE 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 FORMING IONIC BONDS
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3 / 3 pts Which of the following is an element not typically found in living organisms? Br C a H S Na Br Question 8
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3 / 3 pts Aldehyde KETONE A is a chemical formula that does NOT show the C-H and C-C bonds. Covalent formula Line bond formula Empirical formula Kekule’ structure Condensed formula CONDENSED FORMULA In biomolecular structure, if two macromolecules interact it is called a. Monomer Dimer Macromolecular structure Supramolecular complex Quasimer complex SUPRAMOLECULAR COMPLEX An organic compound with this structure, C=C, contains a functional group. Alkane Alkene Alkyne
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3 / 3 pts Alcohol Both b and d ALKENE Scientists refer to as the “super glue” of the chemistry. C Co Na N O C What energy molecule is produced via respiration? ATP Creatine DNA RNA mitochondria ATP What would be the approximate size of a human cell? a. 0.1 inch b. 1 nm c. 10 nm
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Question 20
3 / 3 pts When writing an organic functional group, scientists often write an “R” as part of the structure. What does the R indicate? Argon Rest of the molecule Routine carbon atom A string of carbon atoms None of the above REST OF THE MOLECULE According to the module, the study of NON-carbon compounds is referred to as. Organic chemistry Inorganic chemistry Biochemistry Environmental chemistry None of the above. INORGANIC CHEMISTRY The functional group was NOT discussed in this module. Alcohol Amine Aromatic Thiol All of these were discussed. ALL OF THESE WERE DISCUSSED
Question 21
3 / 3 pts Which number would be closest to the approximate number of ribosomes in an E. coli cell? A. 1 B. 25 C. 250 D. 25, E. Both c and d D. 25,
Question 22
3 / 3 pts Which of the following would most likely have a cell wall? Marigold flower cells Deer cells Heart cells Human red blood cells All of the above MARIGOLD FLOWER CELLS Eukaryotes have molecules that provide a protective structure. This network, which is found in all eukaryotes, is called the. Cell wall Cytoskeleton Cytosol Cytoplasm None of the above CYTOSKELETON
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5 / 5 pts (Short response) Would a scientist be more likely to find an element such as O in a biomolecule, or W? Explain which she would more likely find in a biological molecule and give specific physical/chemical properties. She would more likely find O. Smaller elements are preferred. In the case of O, it is found in water, so it would be highly concentrated. Smaller elements with smaller atomic shells are favored because they can form stable covalent bonds. Strong bonds form by significant overlap of atoms, such as carbon and hydrogen permitting them to share electrons. The bond that forms requires a substantial amount of energy to break, which allows the bonds to withstand insults, such as mechanical and thermal stresses. This bond strength is good news for living organisms. Stable bonds allow cells to form, hair to grow, and skin to protect against abrasion. Larger elements, such as W, tend to form ionic compounds – not covalent.
Question 28
5 / 5 pts (Short response) Describe at least three properties of carbon that permit it to be the basis of life.
- Carbon can form strong covalent bonds with a variety of different elements. 2. Besides, carbon can form double and triple bonds with other carbon atoms and other elements (N and O). 3. Carbon can form long chains by forming numerous carbon-carbon bonds; we call these large molecules polymer. 4. Lastly, carbon can form cyclic structures, which are also called ring compounds.
Question 29
5 / 5 pts (Short response) What the definition of inorganic chemistry? How does it differ from organic chemistry? Inorganic chemistry is the study of all other elements, but carbon. Organic chemistry is the study of carbon-based compounds both in living and non-living organisms. There is no need to have separate sub-disciples for organic and inorganic chemistry, but for historical and organizational reasons, the difference exists.
(Short response) Biochemists study the communication within and among organisms. According to the module, what are two other aspects of living organisms that biochemists study? In the module, biochemists also study the structure and function of biomolecules and the chemical reactions of organisms.
Question 30
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