The universal donor is indicated by
a. column W.
b. column Y.
c. column Z.
d. row W.
e. row Z.
Answer: a
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Of the following microtubule-interacting proteins, which might you potentially investigate as a mechanism for disrupting cell division in actively replicating tumor cells?
A) Tau B) +-TIP proteins C) catastrophins D) G-actin E) FtsZ
In Arabidopsis, the monopteros gene regulates:a
positional effects in leaves.
b. the activity of the vascular cambium. c. the differentiation of wounded parenchyma cells into tracheids. d. apical-basal pattern formation. e. the location of the preprophase band.
Which of the following pairings, indicated by letters referring to blood type phenotypes, CANNOT produce a child with type B blood?
a) A x B b) B x O c) O x AB d) AO x AO e) All of the above could produce a child with type B blood.
Molecules of water stick to each other because:
A) covalent bonds form between the hydrogen atom of one molecule and the oxygen atom of another molecule. B) water molecules are nonpolar, and nonpolar molecules stick together. C) hydrogen bonds form between the hydrogen atom of one molecule and a hydrogen atom of another molecule. D) hydrogen bonds form between the hydrogen atom of one molecule and the oxygen atom of another molecule.