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25 ml of a solution of 0.1 M acetic acid ( Ka=1.5*10^-5) is tritrated with a 0.05 M NaOH.
a) Calculate the initial pH.
b) Calculate the pH after adding 25 ml of NaOH.
The flagellated protest Giardia does not have true mitochondria but does have organelles called mitosomes. Determine what features would you look for to test the hypothesis that mitososmes are derived from mitochondria?
Differentiate between ectoderm, mesoderm and endoderm and list what tissues arise from each.
Both directional and stabilizing selection affect the additive variance in quantitative traits. Given their effects, how much additive genetic variance do we expect to find in traits that affect fitness?
Research the topic of recombinant DNA. Answer the following in a comprehensive paragraph or two:
What approaches would you use to estimate a species' potential instrumental value? Should potential values influence conservation decisions?
What are the four chambers of the heart and which is the thickest one?
How is sex determined in grasshoppers? Can you find out other examples of organisms with a similar system of sex determination.What syndrome is defined by an XXX genotype.
Understand why the same cells (granulosa and theca) of the follicle produce estradiol during the follicular phase, but progesterone during the luteal phase? Why? (hint: look at steroid synthesis pathway)
Comple a Punnett square for the cross Bb x bb, where B is brown eyes and b is blue eyes.
What would a virally infected skin epithelial cell have on its cell surface?
a) Draw a ribbon diagram for Perrynova indicating the likely residues for each hairpin turn between the ß strands.
What is one of the classic symptoms of the measles? Are antibiotics effective for treating the measles? Please explain your answer. If 90% of the population is vaccinated will the measles virus still be able to spread?
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