There is reciprocal regulation of glycolytic and gluconeogenic reactions interconverting fructose-6-phosphate and fructose-1,6-bisphosphate. which one of the following statements about this regulation is not correct?
a) fructose-2,6-bisphosphate activates phosphofructokinase-1.
b) fructose-2,6-bisphosphate inhibits fructose-1,6-bisphosphatase.
c) the fructose-1,6-bisphosphatase reaction is exergonic.
d) the phosphofructokinase-1 reaction is endergonic.
e) this regulation allows control of the direction of net metabolite flow through the pathway.

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.