Intercalating agents, such as acridine orange, are mutagens because they
A) promote transitions.
B) remove amine groups.
C) attach to purines causing distortions.
D) add ethyl or methyl groups.
E) fit between stacked bases and disrupt replication.
E) fit between stacked bases and disrupt replication.
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In human development, cell rearrangement within the ball of cells (morula) leads to a hollow sphere with a "mound" of cells at one pole. This group of cells is called the:
A. mesoderm. B. blastocyst. C. neural plate. D. inner cell mass. E. gastrula.
The strongest chemical bonds are
A. hydrogen bonds. B. Van der Waal forces. C. hydrophobic interactions. D. ionic bonds. E. covalent bonds.
The pollen tube grows from the ________ to the ________, where it eventually fertilizes the egg.
A. petal; ovary B. sepal; filament C. anther; style D. stigma; ovule
Lipid synthesis occurs in which eukaryotic organelle?
What will be an ideal response?