Which equation is used to calculate the free energy associated with a reaction?
a. ?G = ?H-T?S
b. ?G = ?H+T?S
c. ?G = - ?H+T?S
d. ?G = ?S+T?H
e. ?G = -?S-T?H
ANSWER: a
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A bone marrow transplant may not be appropriate from a given donor (Jane) to a given recipient (Jane's cousin Bob), even though Jane has previously given blood for one of Bob's needed transfusions, because _____
A) even though Jane's blood type is a match to Bob's, her major histocompatability (MHC) proteins may not be a match B) a blood type match is less stringent than a match required for transplant because blood is more tolerant of change C) for each gene, there is only one blood allele but many tissue alleles D) Jane's MHC class II genes are not expressed in bone marrow
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Any change in allele frequencies in a gene pool is called ____
a. natural selection b. macroevolution c. microevolution d. mutation e. artificial selection