Campbell Essential Biology with Physiology (5th Edition)
5th Edition
ISBN: 9780321967671
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece, Kelly A. Hogan
Publisher: PEARSON
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Chapter 5, Problem 11PS
HIV, the virus that causes AIDS, depends on an enzyme called reverse transcriptase to multiply. Reverse transcriptase reads a molecule of RNA and creates a molecule of DNA from it. A molecule of AZT, the first drug approved to treat AIDS, has a shape very similar to (but a bit different than) that of the DNA base thymine. Propose a model for how AZT inhibits HIV.
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Chapter 5 Solutions
Campbell Essential Biology with Physiology (5th Edition)
Ch. 5 - Prob. 1SQCh. 5 - ______ is the capacity to perform work, while...Ch. 5 - The label on a candy bar says that it contains 150...Ch. 5 - Why does removing a phosphate group from the...Ch. 5 - Prob. 5SQCh. 5 - Explain how an inhibitor can disrupt an enzymes...Ch. 5 - If someone at the other end of a room smokes a...Ch. 5 - Prob. 8SQCh. 5 - What is the primary difference between passive and...Ch. 5 - Which of these types of cellular transport...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- About how many nucleosomes could be made from a DNA strand consisting of 1000 B-helical turns? A. 5 B. 50 C. 500 D. This is not enough DNA to make even one nucleosome. The abbreviation dGp indicates: A. 3', 5' deoxyguanylate. B. 3' deoxyguanylate. C. 5' deoxyguanylate. D. 5', 3'deoxyguanylate.arrow_forwardDNA contains thymine rather than uracil. Why is the presence of thymine in DNA advantageous? What effect would the presence of uracil in DNA have on DNA repair?arrow_forwardA) What is the difference between a nucleoside and a nucleotide? B) Give any two differences between DNA and RNA. C) Draw the structure of deoxyribose and ribose below, and number the carbons. What is the difference between the two structures? Please answer all 3 partsarrow_forward
- Which is a difference between B-DNA and A-DNA? A. For polynucleotide strands containing the same number of nucleotides, the B-DNA strand will be shorter from end-to-end than the corresponding A-DNA. B. Both are helical, but B-DNA is right-handed and A-DNA is left-handed. C. The sugar in A-DNA is more oxidized than that in B-DNA D. Helical structures in RNA predominantly adopt the B-DNA conformation. E. None of the above. The tetranucleotide AGTC (in DNA) has a free hydroxyl group on ____. A. A B. G, T, and C C. C D. A, G, T, and Carrow_forwardConsider how histone proteins bind to DNA and then explain why a salt solution with a high concentration can remove them from DNA (as shown in Figure 12.21b).arrow_forwardThe first successful drug trial to reduce concentrations of huntingtin in the brain used single stranded DNA molecules. Suggest and explain how this drug could cause a reduction in the concentration of the protein huntingtin.arrow_forward
- A person in shock may have pale, cold, and clammy skin and a rapid and weak pulse. What is the role of the autonomic nervous system in producing these symptoms? Discuss how drugs that influenceautonomic activity might be used to treat someone in shock.arrow_forwardHIV, the virus that causes AIDS, depends on an enzyme called reverse transcriptase two multiply. Reverse transcriptase reads a molecule of RNA and creates a molecule of DNA from it. A molecule of AZT, an anti-AIDS drug, has a shape very similar to ( but a bit different than) that of the DNA base thymine. Proposed a model for how AZT Inhibits HIV.arrow_forwardWhat difference between RNA and DNA helps to explain the greater stability of DNA? What implications does this have for the function of DNA?arrow_forward
- Provide an explanation for why in DNA, the base G is always base paired with C and A is always base paired with T?arrow_forwardIf DNA synthesis occurs without error, the resulting double-stranded DNA is an exact copy of the original double-stranded DNA (exact in that the base sequences are identical). Does this mean then that in DNA synthesis, the two single-stranded templates are identical? Explain.arrow_forwardDNA contains the information that a cell uses to synthesize a particular protein. How do proteins assist in DNA replication?arrow_forward
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