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a) If the calculated Rf value is .5900, what pigment is separated?
b) If two pigments were separated through chromatography and were found to have Rf values of .4300 and .8000, which pigment has the greatest molecular weight?
c) If two pigments were separated through chromatography and were found to have Rf of .6700 and .3900, which pigment traveled the farthest?
Explain cell wall inhibition.Why are we observing an increase in antibiotic resistant organisms? Define spectrum of activity, broad-spectrum drugs. How can we improve the activity of an antibiotic? Give examples.
Plan a scientific experiment to find out the effect of this environmental factor on the rate of photosynthesis or cellular respiration in your chosen organism (reviews the scientific method, remember hypothesis, control so on.
Fungi are found primarily in which of the following environments? Which of the following groups is responsible for toxic red tides?
how a protein could be isolated using affinity chromatography.
Hypothetical DNA sequence (for one strand) for two humans is given. Which of the following type of variation is represented by these sequences? A- ATGCTATATATTTAAITATGCTTCC
How do these duplications arise and what do they propose in terms of mechanisms of transposition. Could you help to understand FEV1/FVC and how the expected percentage of this figure relates to respiratory problems.
predict the effects of a drug that activates the sympathedic nervous system on blood pressure and heart rate. How would this drug affect the three factors that determin blood pressure?
Find that bubbling pure oxygen into the cultures does not result in any enzyme activity against either lignin or cellulose - what type of enzyme have you discovered? And what is the rationelle for it?
Tongue rolling is dominant to non-rolling and PTC tasting is dominant to non-tasting. Show the cross between two individuals who are heterozygous for both traits. Give the phenotypic ratio of offspring.
A heterozygous brown-eyed human female who is a carrier of color blindness marries a blue-eyed male who is not color-blind. Color blindness is a sex-linked trait. Assume that eye color is an autosomal trait and that brown is dominant over blue. Wh..
Describe two important factors that contribute to the buildup of CO2 in the atmosphere and contribute to global warming. Discuss possible ways to control these factors.
What do TATA boxes, initiators, and CpG islands have in Common? Which of these are, theoretically, easiest to identify from genomic sequences? Describe three types of post-transcriptional regulation of protein-coding genes.
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