Sucrose maltose, and lactose are common dietary disaccharides, Their monosaccharide components are substrates for the pathway, but some must particlpate in additional reactlions before they can act as substrates for a glycolytic enzyme Asaresuit all do not enter glycolysis at the same step. in muscle cells, which enzyme would act as the rate-limiting step to regulate entry of products from all three dietary disaccharides into glycolysis?

A. phosphoglucose isomerase
B. hexokinase
C. aldolase
D. phosphoglucose -1

One of the newest applications of cell technology is called cybrid embryos. this process involves replacing the nuclear material of an animal cell with human nuclear material. how might this process affect public policies about research by using stem cells? the same policies and concerns about the use of human embryonic stem cells would most likely apply. the embryos would most likely be treated like traditional animal embryos and regulated accordingly. the process of forming cybrid embryos would most likely be banned by government regulators. the embryos would be treated as regular cells because they are not fully human in origin.