Contact of a sea urchin egg with signal molecules on sperm causes the egg to undergo a brief ________.

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#Question id: 666

#1. Molecules and their Interaction Relevant to Biology

Nearly all peptide bonds are in the trans configuration because

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#Question id: 2265

#2. Cellular Organization

Passage through pores in the nuclear envelope is restricted primarily to

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#Question id: 19706

#13. Methods in Biology

In second-degree heart block

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#Question id: 3448

#11. Evolution and Behavior

Which scientist devised a rule that predicts when natural selection should favor altruism?

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#Question id: 3668

#3. Fundamental Processes

In most plasmids, the genes for proteins required for replication are located very close to the ______________ at which their gene are transcribed.