chycen in the exhaled air haemoglobin in the me brengen in the medulla oblongation to change in the A glucose level of the blood oxygen level of the tissue fluid carbon dioxide levels of the blood. DATP levels of mitochondda (3X2) (6) QUESTION 2 (Questions taken from various sources) Give the correct biological term for each of the following descriptions. Write only the term next to the question number (2.1 to 2.3) in your ANSWER BOOK 2.1 The muscles between the ribs that are involved in the mechanism of breathing 2.2 The tendency of Ilving organisms to maintain a constant intercal environmont. 2.3 Air sacs in the lungs.​