Describe the function of cycle of checkpoints

A checkpoint is a stage in the eukaryotic cell cycle at which the cell examines internal and external cues and "decides" whether or not to move forward with division. ... The spindle checkpoint, at the transition from metaphase to anaphase.

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the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.