In the case of phage lambda, termination of lysogeny and entry into the lytic cycle usually occurs in response to environmental damage to the host DNA.
Answer the following statement true (T) or false (F)
True
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When does endospore formation commence?
A) when bacterial growth ceases due to limitation of an essential nutrient B) when the bacterium is undergoing binary fission C) when bacteria are dividing exponentially D) following bacterial death
The “green revolution” to improve agricultural production ____
a. is based on large inputs of fertilizer b. does not require pesticides c. does not rely on modern irrigation d. produces crop yields ten times higher than tradition methods e. uses less energy than non-green methods
Bacterial cells are placed into a 250 mL liquid growth medium in a closed laboratory flask. According to Malthusian theory, they will reproduce exponentially and then
A. continue reproducing arithmetically as long as there are no limitations on food supply. B. continue reproducing arithmetically until the food supply is used up, then they will cease to grow. C. continue reproducing geometrically as long as there are no limitations on food supply. D. continue reproducing geometrically until the food supply is used up, then they will cease to grow.
What is the fate of pyruvic acid in an organism that uses aerobic respiration?
A) It is reduced to lactic acid. B) It reacts with oxaloacetate to form citrate. C) It is oxidized in the electron transport chain. D) It is catabolized in glycolysis. E) It is converted into acetyl CoA.