The guppy is a species of freshwater fish scientists observed that the average size of guppies in the pond decreased after a predator was introduced into the pond which of the following best explains the change in the guppies size

Asuspension of yeast cells is being grown under anaerobic conditions such that glucose is degraded to ethanol and carbon dioxide. if one wishes to follow this process by monitoring the release of 14co2, at which positions in the glucose molecule would the 14c label need to be incorporated?