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Your friend has isolated plasma membranes and reassembled the membranes into small vesicles. Using fluorescently labeled lectin, he sees that some of his vesicles are fluorescently labeled and some are not. Recall that lectin binds to carbohydrates. Furthermore, his labeled lectin cannot permeate membranes.
A. Which population of vesicles has a surface similar to that of the cell? Why?
B. How do you explain the other population of vesicles?
Compute the change in allele frequency under the island continent model for gene flow under the follwing conditions
A pharmaceutical company has sent you samples of two new metabolic inhibitors to characterize as possible antibiotics.
Using each of these sources. would you be able to write a paragraph for each source using quotes from the sources, talking about the mammoth extinction and the type of source it is i.e primary, secondary, bias, unbias, reputable..?
A plasmid 3 Kb in length contains a gene for ampicillin resistance and a gene for tetracycline resistance. The plasmid has a single site for each of EcoRI, Bg/II, and PstI.
If Penicillium typically secretes penicillin without disturbing the lichen relationship in which it is engaged, then what should have been true about its partner.
Which of the subsequent statements is true about phylogeny. The ancestral group frequently has all the synapomorphies of the descendant species.W hat phenotypes would be seen in the f2 and in what proportion.
Assume that for a trait that is determined through a set of two alleles, the observed frequency for homozygous dominant, homozygous recessive, and heterozygous are 0.64.
What would be the limiting factor for ATP production by glycolysis in a strenuously-exercising muscle that lacks lactate dehydrogenase?
A cell attempts mitosis with only one spindle pole, but is otherwise normal. Which of the following is true for this cell?
if a test cross of AaBb produces equal numbers of AaBb, Aabb, aaBb, and aabb progeny, what can you conclude about the map distance between the two loci?
Where in the DNA is the code for synthesizing protein.
How can you infer what type of volcano erupted in a given area based on type of volcanic deposits now found as layers of rock. What abnormality may underlie those conditions.
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