(N/A) In glycolysis, energy is yielded in the form of $ATP$ during the following two substrate-level phosphorylation reactions:
$1$. The conversion of $1,3$-bisphosphoglyceric acid to $3$-phosphoglyceric acid, catalyzed by the enzyme phosphoglycerate kinase. In this step, $ADP$ is phosphorylated to $ATP$.
Reaction: $1,3\text{-bisphosphoglyceric acid} + ADP \rightarrow 3\text{-phosphoglyceric acid} + ATP$
$2$. The conversion of phosphoenolpyruvate to pyruvic acid, catalyzed by the enzyme pyruvate kinase. In this step, $ADP$ is phosphorylated to $ATP$.
Reaction: $\text{phosphoenolpyruvate} + ADP \rightarrow \text{pyruvic acid} + ATP$