The number of protons in an uncharged atom ______.
Fill in the blank(s) with the appropriate word(s).
Answer: Equals the number of electrons
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A mutation in which the fate of cell lineages is not synchronized in an organism is called a ____
A. heterochronic mutation B. apoptotic mutation C. homeotic mutation D. homeobox mutation
If a restriction endonuclease cuts a circular DNA three times, how many fragments should there be after the DNA is
subjected to electrophoresis through an agarose gel?
a. 1 b. 2 c. 3 d. 4 e. 5
The taiga or boreal forest is best described as what type of forest?
a. deciduous b. thorn c. coniferous d. broad-leafed e. shrub
Enzymes can lower the activation energy of a chemical reaction by
A) stabilizing the transition state. B) properly positioning reactants. C) properly positioning reactants and stabilizing the transition state. D) raising the temperature so that reactants collide more forcefully. E) properly positioning reactants and raising the temperature so that reactants collide more forcefully.