Answer:
A (-7)/(1)
Explanation:
(-7)/(-1) would be a positive 7.
7/1 would be a positive 7.
(-7)/(0) would be 0.
Answer:
C. the medulla oblongata, which is in contact with cerebrospinal fluid, monitors pH and uses this measure to control breathing.
Explanation:
The central chemoreceptors are located near the medulla inside the blood-brain barrier. When CO2 in cerebrospinal fluid increases, pH of the fluid lower (because CO2 becomes hydrated to carbonic acid). Change in pH stimulates the central chemoreceptors to activate respiratory centers which will increase the respiratory rate and depth of breathing.
Answer:
The vertebral region is superior to the sacral region
Explanation:
Superior meaning toward the head of the body, or looking down on sacral region below
While all macromolecules are useful, protein is the only one produced by ribosomes. Ribosomes are the site of protein synthesis, and they convert the coded information in messenger RNA (mRNA) into an actual protein molecule. The mRNA molecule carries the message contained in your DNA to the ribosome.
