Which structure is a valid representation of a hydrocarbon molecule?

How does the presence of oxygen affect the chemical pathways used to extract energy from glucose?

Is this correct if not can u correct me

Predict the relative bond lengths of the three carbon-oxygen bonds in the carbonate ion (co2−3). what would you expect the charge to be on each oxygen? match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.