#Question id: 4620
#XL - T Zoology
The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data?
#Question id: 683
#XL - Q Biochemistry
Which factor does not help to explain why many proteins exhibit quaternary structure?
#Question id: 1778
#XL - Q Biochemistry
Which is not a function of IgG?
#Question id: 2053
#XL - S Microbiology
The single best chance of a tissue graft being accepted in a human recipient is if it is:
#Question id: 562
#XL - Q Biochemistry
Phenyl-methane-sulfonyl-fluoride (PMSF) inactivates serine proteases by binding covalently to the catalytic serine residue at the active site; this enzyme-inhibitor bond is not cleaved by the enzyme. This is an example of what kind of inhibition?