20. A regulated enzyme of the pentose phosphate pathway is (specify one or more answers): transaldolase glucose -6-phosphate dehydrogenase transketolase hydrolase phosphoglucolactone phosphogluconate

The regulated enzymes of the pentose phosphate pathway include:<br /><br />1. Glucose-6-phosphate dehydrogenase<br />2. 6-phosphogluconolactonase<br />3. Transaldolase<br />4. Transketolase<br /><br />These enzymes are regulated to control the flow of metabolites through the pathway and to ensure the proper balance of NADPH and ribose-5-phosphate production.