What results from the chemical reaction in the illustration? The reactants have no charge.
A) a cation with a net charge of +1 and an anion with a net charge of +1
B) a cation with a net charge of -1 and an anion with a net charge of -1
C) a cation with a net charge of -1 and an anion with a net charge of +1
D) a cation with a net charge of +1 and an anion with a net charge of -1
Ans: D) a cation with a net charge of +1 and an anion with a net charge of -1
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When the Bicoid protein is expressed in Drosophila, the embryo is still syncytial (divisions between cells are not yet fully developed). This information helps to explain which observation by Nüsslein-Volhard and Wieschaus?
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Science is based on
a. faith. b. authority. c. evidence. d. force. e. facts.
The age structure diagram for countries with a 2.1
total fertility rate is indicated by a. A. b. B. c. C. d. D. e. none of these.
A researcher is studying a newly discovered toxin. The effect of this toxin is to block the action of the sodium-potassium pump. What prediction can be made about the effect of this toxin on cell volume?
A) The cell volume will increase as water flows into the cell by osmosis. B) The cell volume will decrease as no potassium will be pumped into the cell. C) The cell volume will decrease as no sodium is pumped out of the cell. D) The cell volume will remain the same since the transport of water is not directly affected by this toxin.