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Dr. Ally, a 49-year-old professor, was diagnosed with essential hypertension 12 years ago and was on antihypertensive drugs. However, he did not take his medications last year because he was feeling just fine. In addition, he was very busy with work. Nevertheless, he felt tired after work and developed dyspnea while climbing the stairs. Recently, he had a bout of epistaxis (severe nose bleed) with dizziness and blurred vision. He went to the doctor for a checkup. His blood pressure was 180/110, and the doctor found rales or crackles on his chest upon auscultation. The doctor ordered rest and asked him to start his medication again.
1. What are the patient's problems?
2. What pathophysiological changes are happening in his eyes and heart?
3. According to the doctor, the patient might have developed congestive heart failure. Is it right-sided or left-sided?
4. What medications are likely to have been used? Describe the mechanisms of actions of at least two antihypertensive drugs.
Explain the structure and contents of the nucleus, as well as the process of DNA replication. Please provide the complete solution of this problem.
One aspect of aging appears to be related to telomeres. Every time a chromosome is duplicated in the S Phase of interphase, the ends of the chromosome (i.e. telomeres) unravel. This sets a limit of around 50 cell divisions before the chromosome un..
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discuss the applications of each of following in biology today and include three examples of each with a brief
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I identify a gene in plants and then use BLAST to search for related genes in GenBank. In my BLAST search, I find a gene with a very low Expectation value (E value) in animals. What does this result suggest?
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The hypothetical OxyA protein is a surface protein that may have a role in attachment to the surface of the intestinal epithelium but there is evidence that it has a role in invasion. Write the structural formula for isoamyl alcohol.
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Consider the following genetic cross: a/a B/B D/d X A/a B/b D/d 1. What fraction of the progeny will have the genotype a/a B/b D/D ? 2. What fraction of the progeny will have the phenotype a/a B/_ D/_ ?
Why is it possible for bacterial cells to obtain new genetic traits while humans cannot? Would it ever be possible for human cells to undergo conjugation
Explain why this idea about human evolution is emerging now, rather than 30 to 50 years ago.
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