Matsumara et al. showed that disulfide bonds create a more stable mutant T4 lysozyme. They inserted pairs of Cys residues into the T4 lysozyme sequence and observed that:
A. the reduction of cysteine residues created a protein that denatured at lower temperatures than wild-type lysozyme.
B. the reduction of cysteine residues created a protein that was stable at higher temperatures than wild-type lysozyme.
C. the oxidation of cysteine residues created a protein that denatured at lower temperatures than wild-type lysozyme.
D. the oxidation of cysteine residues created a protein that was stable at higher temperatures than wild-type lysozyme.
E. None of these choices is correct.
D
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The streamlined shape of the dolphin, seal, and other swimming animals is most important for which of the following reasons?
A. reducing drag from the water they must swim through B. overcoming the forces of gravity acting on the animal C. reducing the density of the water they must swim through D. maintaining a low speed in the dense medium E. All of the choices for this question are correct
Consumer fears and uncertainty about the safety of cloned milk and meat have prevented these products from being sold in stores even though the ____________________ has ruled that such food is safe
Fill in the blank(s) with correct word
The primary mycelium of basidiomycetes is dikaryotic
____________________ Indicate whether the statement is true or false.
Which of the following molecules is least likely to be able to pass through a capillary wall?
A) an enzyme B) a sodium ion C) glucose D) oxygen