A variety of plants are used as folk medicine in the treatment
of hypertension.
Laboratory analyses show that a purified extract from one of these
plants decreases
production of aldosterone in an animal model.
Complete the sentences below to explain how this anti-hypertensive
plant extract might
work. In each case indicate the enzyme, hormone or receptor
targeted and explain how the
action of the extract on this target would result in reduced
aldosterone production.
A. The purified extract inhibits…
(60-word limit)
B. The purified extract blocks…
(60-word limit)
In: Biology
A 37-year-old man is diagnosed with Philadelphia chromosome-positive (Ph+) chronic myelogenous leukemia (CML).
a. What is the molecular mechanism that makes this kind of cancer?(1/2 page)
b. What is the first-line treatment for CML and what is the rationale for this pharmacotherapy?(1/4 page)
c. What are the mechanisms of resistance to imatinib pharmacotherapy of CML?(1/4 page)
d. What other cancers and diseases are effectively treated with imatinib?(1/4 page)
e. What are the common and important side effects of therapy with imatinib(1/4 page)
In: Biology
Briefly describe the linear flow of electrons from water to NADPH during the light reaction of photosynthesis.
In: Biology
You are studying a group of Oregonian beavers, and you are interested in the population genetics of a single locus. You genotype 100 beavers and discover that for your locus of interest, there are 55 A1A1 homozygotes, 20 A1A2 heterozygotes, and 25 A2A2 You estimate that the frequency of the A1 allele is ["0.65", "0.35", "0.20"] and that the expected number of A1A2 heterozygotes under Hardy-Weinberg equilibrium should be [ "12.25", "45.5", "50"]
choose number value for both blanks
In: Biology
In details, provide and discuss two experimental examples of GMO from (i) plants, (ii) animals and (iii) bacteria, illustrating the tools that researchers have used to overcome these challenges.
In: Biology
How important (quantitatively) is variation in genes affecting the Tor pathway to human longevity?
Please support answer with citations of studies
In: Biology
How important (quantitatively) is telomere length at birth to human longevity?
In: Biology
46. The filtration coefficient can be decreased by
a. increased MAP
b. decreased TPR
c. decreased venous pressure
d. none of the above
44. Extracellular edema results from
a. increased capillary hydrostatic pressure
b. decreased capillary hydrostatic pressure
c. increased osmotic pressure in the capillary
d. decreased osmotic pressure in the interstitial
compartment
43. Hypoosmotic overhydration can be caused by
a. SIADH
b. DI
c. DM
d. none of the above
44. Extracellular edema results from
a. increased capillary hydrostatic pressure
b. decreased capillary hydrostatic pressure
c. increased osmotic pressure in the capillary
d. decreased osmotic pressure in the interstitial
compartment
43. Hypoosmotic overhydration can be caused by
a. SIADH
b. DI
c. DM
d. none of the above
42. Addison's disease is associated with
a. decreased sodium levels
b. hyperkalemia
c. both a and b
d. none of the above
41. Cushing syndome leads to
a. hyponatremia
b. hypernatremia
c. hyerkalemia
d. none of the above
In: Biology
Several haploid strains of Saccharomyces cerevisiae grow well on YPD but do not grow on minimal media unless adenine is added to the minimal media. Some of those strains accumulate a red pigment and, thus, produce red or pink colonies. How would you determine the biochemical pathway that is defective in these yeast strains? How would you assign the functions to the genes that are mutated in these strains?
In: Biology
How is the body affected by Asthma? Explain in detail the cells, organs, organ systems affected by Asthma.
In: Biology
In: Biology
What are some of the best cognitive tests for regular people and why?
In: Biology
what's the relation between teratomas and ES cells, and the experiments to show their similarity
In: Biology
Compare the phenotypic variation seen in Mendelian inheritance, incomplete dominance, codominance, epistasis, and polygenic inheritance.
In: Biology
Suppose you return to the population after 10 generations and observe 80 black, 240 brown and 180 tan individuals. Explain how you would use the H-W model to determine if there has been statistically significant evolutionary change (change in genetic composition) in the population. Include the following terms in your answer: null hypothesis, observed and expected genotype frequencies, chi-square. Recall that you would need to do the chi-square calculation using observed and expected numbers of individuals of each genotype, not using observed and expected frequencies.
In: Biology