1. A parent bacterial cell is able to survive in the presence of the antibiotic penicillin. Subsequent generations from this parent will be penicillin. 2. Assume a bacterial cell failed to replicate its DNA before it reproduced two daughter cells. The reproduction would result in
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Explanation:

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before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.