Members of a virus family have the same type of nucleic acid
Indicate whether the statement is true or false
TRUE
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If you ran the same experiment as Engelmann without passing light through a prism, what would you predict?
A) The results would be the same. B) The bacteria would be relatively evenly distributed along the algal filaments. C) The number of bacteria present would decrease due to an increase in the carbon dioxide concentration. D) The number of bacteria present would increase due to an increase in the carbon dioxide concentration. E) The number of bacteria would decrease due to a decrease in the temperature of the water.
Which of the following statements about regulation of the lac operon is true?
A. When glucose is present, gene expression is activated by lactose. B. The amount of glucose in the growth medium does not affect the level of gene expression activated by lactose. C. The binding of the Lac repressor to the operator is not affected by the presence of glucose. D. Gene expression is high when the Lac repressor is not bound to the operator and glucose is available.
Some ___ have enzymes to break the bonds of atmospheric nitrogen and use it for the metabolism of proteins and
other nitrogen containing molecules.
a. fungi b. bacteria c. plants d. protists e. animals
The formation of soil by gradually breaking rock into smaller particles by biological, chemical, and
physical processes is known as: a. erosion. b. inorganic synthesis. c. cation exchange. d. salinization. e. weathering.