Chen is attempting to make his own beer through alcoholic fermentation. After the fermentation stage, Chen finds that one of his batches has no alcohol content. Which of the following could have happened during the fermentation step of this batch? a. There was too much sugar present in the mixture.
b. There was too much pyruvate present in the mixture.
c. The container allowed oxygen to leak in.
d. The container allowed oxygen to leak out

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms

the answer is c a tornado