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1. The pka values of a compound with two ionizable groups are pk1=4.10 and pk2 between 7 and 10.  We have 10 mL of a 1.0 M solution of this compound at a pH of 8.0.  She adds 10.0 mL of 1.0 M HCL, which changes the pH to 3.20.  What is […]

Essay style: Respond in 200 words or more, explain why evolution is wrong or why you believe it to be true about life. Do you believe that evolution should be taught in the classroom and what are the benefits or consequences? Do you consider intelligent design (Christianity) as a science? […]

The termination of translation occurs when a ribosome that is translating an mRNA encounters a stop codon. Since there are no tRNAs that can base pair with stop codons, the A-site of a ribosome that is positioned at a stop codon is able to bind a protein called release factor, […]

Heliconius melpomene is a species of butterfly with ZW sex determination. H. melpomene’s wing spots are normally orange, but a recessive Z-linked mutation causes the spots to be yellow, while a recessive autosomal mutation causes the spots to be red. Butterflies homozygous (or hemizygous) for both mutations have no wing […]