The form of energy that is available to living organisms is in the form of
A) sunlight.
B) radiation.
C) chemical bonds.
D) nuclear energy.
E) heat.
C) chemical bonds.
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The function of the bacteriophage ? N protein is to:
A. bind directly to the promoter of genes that are active late in the infection process. B. allow transcriptional read-through of hairpin terminator sites in mRNA. C. block ? repressor synthesis. D. block transcription of all phage genes except its own.
Which of the following characteristics apply to plants?
a. producer only b. heterotroph, producer c. producer, multicellular, cell wall d. heterotroph, producer, multicellular, cell wall
Generally, which phase of the cell cycle varies the most in length?
a. G1 b. S c. G2 d. M e. All phases are the same length among cells
Four of the five choices below are white blood
cells that are capable of circulating in the blood. Select the EXCEPTION.
a. neutrophil b. mast cell c. macrophage d. eosinophil e. dendritic cell