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Consider a pre-mRNA that is 12,700 nucleotides long and contains seven 100 base exons separated by 2000 base introns. It seems like an overwhelming task for the splicing machinery to find the exons buried in the intron sequences and to splice them properly, without skipping any exons. Explain how this is accomplished.
Assuming that all other variables remain constant, explain why light of shorter wavelength will produce a clearer image than light of longer wavelengths.
Which statement is most accurate concerning how photosystem II (PS II) compares to the electron transport chain (ETC) of mitochondria? A) In both systems, ATP is produced by chemiosmosis.
Why is the gene coding for ribosomal RNA used for establishing phylogenetic relationships and how does this compare to previous methods for placing organisms in appropriate taxa
Once two populations of a species have become allopatric with some barrier preventing gene flow between them, the two populations are free to diverge genetically. One mechanism for divergence that is thought to result in rapid divergence is sexual..
For which molecules and ions does your experiment give evidence for passage through the semipermeable dialysos membrane? in which direction(into or out of the bag) are the molecules moving?
What are the different phospholipases that act to hydrolyze the ester linkages of the groups attached to the various carbon atoms of glycerol? At which carbon atom of glycerol are you most likely to have arachidonate bound?
Assume if a man of blood group AB marries a woman of blood group A whose father was of blood group O, to what different blood groups can this man and woman expect their children to belong?
A particular polypeptide chains folds into an alpha-helix, which extends from the amino acid at position 5 to the amino acid at position 20. Which of the following is most likely to be the amino acid present at position 4?
Which characteristic of cell membranes might explain why fat-soluble substances such as chloroform and ether rapidly affect cells.
Semisolid media such as MIO are used to determine motility. Another such medium is SIM (sulfide, indole, motility) medium. When would you use SIM instead of MIO?
Discuss the economic/health impact of any one species of harmful water molds. What is the effect of increase temperature on a non enzyme catalyzed reaction?
Each olfactory receptor gene is involved in detecting specific odors. However, humans are losing OR genes, while mice and other mammals have ~ 1500 such gene.
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