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About half of the bacilli and all of the spirilla bacteria are motile, by means of flagella. Very few cocci are flagellated or motile. Why do you think flagella-based swimming motility might be commonly seen in spiral and bacilli bacteria, but very seldom in coccal bacteria (hint: think hydrodynamics: can you think of many spherical fish?)
If the hernia allele in Belgium terriers has a frequency of 0.09, what is the probability that a puppy you buy will develop this problem (the problem is expressed by the homozygous recessive condition hh)?
Describe the way epidemiologist calculate the frequency of cases when it comes to prevelence and incidence. Then discuss some of the major sources of disease tranmission.
Which wavelengths of visible light carry the most energy? How does this relate to strategies for plant photosynthesis? Why was it important to mark the TLC plate with pencil?
Assume you have found a new Xenopus gene that codes for a RNA binding protein. You are not sure what its function is but you are interested in finding out as much as you can.
Assume you have an invitro kit in mol bio lab and require to use it. It has all the ingredients to get yield of your product, which can be a protein or nucleotides.
Considering the principles of mutation, genetic drift, and natural selection discussed in this and previous chapters, do you expect adaptive evolution to occur more rapidly in small or in large populations?
Assume you are analyzing the function of an unknown drug that you suspect alters metabolism in human cells. You add the drug in different amounts in a colony of cells and find that above a certain concentration,
20 year old student jason came into the student health center throughout finals complaining of a sore throat, general malaise, and low fever.
The ATP solution used in this experiment had a concentration of 0.25 percent, which represents the normal physiological cytoplasmic concentration of ATP.
We are able to produce human insulin in bacteria by inserting the gene into bacteria. What is the basic theory of biological evolution and what evidence is there to support this theory?
2-mutant, colorless strains of the (fictitious) haploid fungus Cyanomyces are crossed. The progeny consists of 50% wild-type and 50 percent mutant spores.
Diversity in tropical regions is generally greater than at high latitudes. Explain two different hypotheses that propose the mechanism for this pattern that remains a biological mystery
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