Since an animal only becomes more complex, and not simpler, an ancestor to all organisms would have to be the most simple and primitive organism.
C. Combine with hemoglobin to form oxyhemoglobin
I think the correct answer from the choices listed above is option A. If the reaction of maltase is optimum at the pH range of 6 to 7, then most likely when the ph is decreased into three maltase would not be able to function outside of its optimal pH range. Hope this answers the question.
Q. The brain and spinal cord are known as the central nervous system (CNS). The spinal cord contains nerves that send information to and from the brain. The ___________ is a bundle of nerve tissue at the base of the brain that connects the cerebrum to the spinal cord and sends messages between different parts of the body and the brain.
A. the spinal cord
