Q1. The net products of the first stages of the pentose phosphate pathway (oxidative phase) are NADPH and Ribose 5-phosphate. Describe why this is not the end of the pathway (why additional reactions are needed so that the pathway can respond to varying metabolic situations). List a variety of products of the non-oxidative phases of the pathway.

Q2. If a population with two alleles is at Hardy-Weinberg equilibrium and the frequency of one allele is 0.6, what is the heterozygote frequency?

Q3. Clarify how the exergonic slide of electrons down an electron transport chain is coupled in the endergonic production of ATP by chemosmosis.