In water, MgCl2 dissociates into Mg2+ and Cl-. Based on this information what type of bond is involved in the formation of MgCl2?
A. hydrogen.
B. ionic.
C. polar covalent.
D. nonpolar covalent.
E. electrostatic.
B. ionic.
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The 140 kbp genome containing many short repeats, ribosomal RNA genes, one RNA polymerase gene (rpo) and one RubisCO gene (rbcL) is most likely from a(n)
A) plant. B) autotrophic bacterium. C) chloroplast. D) autotrophic archaeon.
You discover a mutant strain of Neurospora crassa that will not grow on a minimal medium but that will grow on a medium supplemented by the amino acid methionine
How can you determine which step in the methionine synthesis pathway is affected by the mutation?
What type of selection is represented by the accompanying figure?
a. no selection b. natural selection c. disruptive selection d. stabilizing selection e. directional selection
What are microtubules
Fill in the blank(s) with the appropriate word(s).