Bacteria in your lab are grown under two conditions, one with exposure to glucose and the other with lactose. what best describes the effects glucose will have upon the enzymes used to metabolize lactose?
glucose will turn off all trp genes.
glucose repression stops the lac operon from being induced.
nothing as the enzymes that metabolize both lactose and glucose are the same.
the enzymes needed to metabolize lactose are inhibited.
induction of the enzymes is reduced.

Embryonic stem cells are cells derived from an embryo. these cells can be used to create new tissues for patients suffering from certain illnesses and disorders. which statement best summarizes why the use of embryonic stem cells could be seen as unethical? a. some people consider embryos to possess rights equal to those of fully developed human beings. b. extracting stem cells from embryos is a very energy-intensive process, which consumes resources that could be used elsewhere. c. embryos are difficult to obtain, so the monetary cost of using them for research outweighs their benefit. d. the process of extracting stem cells from embryos generates biohazardous waste that cannot be safely disposed of.