Isoelectric focusing separates proteins based on the pH at which they are electrically ________.
Fill in the blank(s) with the appropriate word(s).
neutral
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The complex mixture of polymers coating the spore that protect the spore from dessication and UV radiation is ____
Fill in the blank with the appropriate word.
The main DISADVANTAGE of excessive gluconeogenesis during prolonged postabsorptive periods is that
A. continued protein breakdown can impair enzymatic activity and plasma membrane functions. B. carbohydrate buildup in the liver impairs its function. C. the brain is exposed to levels of glucose that are too high. D. tissues other than the brain increase glucose utilization. E. glucose absorption from the gut is impaired.
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What will be an ideal response?
Analyses of molecular sequences for study of evolutionary relationships are constrained by ____
a. the fact that every base in a nucleic acid serves as a separate, independent character for analysis b. the presence of many genes that have been conserved by evolution c. the limited number of nucleotide characters, making it difficult to determine whether genetic similarities between species are homoplastic or homologous d. the usefulness of genes for studying only closely related species that have minor morphological differences e. nucleic acids that are not directly affected by the developmental or environmental factors that cause nongenetic morphological variations