Which of the following is NOT true about enzymes? Remember to look for three that you know are correct, and choose the one you
know is NOT correct about an enzyme.
they facilitate (help with) the break down or build up of molecules
substrates bind to them and undergo a chemical reaction
they help lower activation energy in a chemical reaction
they are special lipids

Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.

What gases are carried by the blood