BS 161 FINAL EXAM QUESTIONS AND
ANSWERS 100% score (Newest 2025) In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by - Correct Answers ✅polar covalent bonds The negative logarithmic of the hydrogen ion concentration in the solution is referred to as - Correct Answers ✅pH When are atoms most stable? - Correct Answers ✅when all of the electron orbitals in the valance shell are filled The structural formula for a certain molecule includes a group symbolized -O. The dash next to the oxygen atom means that a single bond exists to another atom, such as a carbon.Based on the valence of oxygen and the number of bonds it normally forms, what is the charge on the oxygen atom in this case? - Correct Answers ✅ Two carbon atoms joined to each other by sharing of two
pairs of electrons form a(n): - Correct Answers ✅ionic bond
Plants transport water to their leaves through the xylem when water evaporates from the leaves. The evaporating water pulls other water molecules up the xylem through - Correct Answers ✅ Membrane lipids contain long chains of H-C-H groups joined by C-C bonds. Which interaction is most likely to occurring 1 / 4
BS 161 FINAL EXAM QUESTIONS AND
ANSWERS 100% score (Newest 2025) between lipids in the membrane? - Correct Answers ✅van der waals
Consider the following electronegativity values: Boron=1.8;
Carbon=2.5; Chlorine=3.2; Selenium= 2.6. Which bond is the most polar? - Correct Answers ✅B-Cl Which of the following best summarizes the relationship between dehydration reactions and hydrolysis? - Correct Answers ✅Dehydration reactions assemble polymers, and hydrolysis reactions break down polymers.Which of the following polymers contain(s) nitrogen? - Correct Answers ✅Chitin The molecular formula for glucose is C6H12O6. What would be the molecular formula for a molecule made by linking three glucose molecules together by dehydration reactions? - Correct Answers ✅C18H32O16 It became apparent to Watson and Crick after completion of their model that the DNA molecule could carry a vast amount of hereditary information in which of the following? - Correct Answers ✅Sequence of bases What is meant by the description "antiparallel" regarding the strands that make up DNA? - Correct Answers ✅The 5' to 2 / 4
BS 161 FINAL EXAM QUESTIONS AND
ANSWERS 100% score (Newest 2025) 3' direction of one strand runs counter to the 5' to 3' direction of the other strand If you made a change in the promoter sequence in the DNA that inactivates the promoter, what would happen at the RNA level? - Correct Answers ✅The RNA polymerase would not be able to recognize and bind the DNA, so no RNA would be made The genetic code is essentially the same for all organisms.From this, one can logically assume which of the following? - Correct Answers ✅A gene from an organism can theoretically be expressed by any other organism Imagine you have discovered a new species of bacteria. To begin your investigation of this organism, you run an assay on the total nucleotide content of the bacterial DNA. If the cytosine content of DNA from the bacterial cells is 40%, what is the adenine content? - Correct Answers ✅10% Which of the following does not occur in prokaryotic eukaryotic gene expression, but does in eukaryotic gene expression? - Correct Answers ✅a Poly-A tail is added to the 3' end of an mRNA and a cap is added to the 5' end The Dystrophin gene is 2.3 million nucleotides long, however it only uses ~12,00 nucleotides to make a protein consisting 3 / 4
BS 161 FINAL EXAM QUESTIONS AND
ANSWERS 100% score (Newest 2025) of 3,685 amino acids. This is best explained by the fact that - Correct Answers ✅ Accuracy in the translation of mRNA into the primary
structure of a polypeptide depends on specificity in the: -
Correct Answers ✅Bonding of the anticodon to the codon and the attachment of amino acids to tRNAs Streptomycin is an antibiotic that interferes with the function of the large subunit of the prokaryotic ribosome. What is the consequence of treating bacteria with streptomycin. - Correct Answers ✅impaired protein synthesis DNA template strand 5'-------------3' DNA complementary strand 3'----------5' Given the locally unwound double strand above, in which direction does the RNA polymerase move? - Correct Answers ✅3' --> 5' along the template strand In the transcription event of the previous DNA, where would the promoter be located? - Correct Answers ✅To the right of the template strand What enzyme catalyzes the attachment of an amino acid to tRNA? - Correct Answers ✅aminoacyl-tRNA synthetase
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