Breathing is primarily regulated by _____

A) erythropoietin levels in the blood
B) the concentration of red blood cells
C) hemoglobin levels in the blood
D) carbon dioxide concentration and pH-level sensors
E) the lungs and the larynx


Answer: D

Biology & Microbiology

You might also like to view...

The ?-jelly roll of the Lpt system functions to

A. help translocate assembled LPS across the outer membrane of the bacterial cell. B. help attach the O-antigen to core oligosaccharide moieties during synthesis of LPS. C. help anchor the newly positioned LPS on the bacterial cell surface. D. help hide lipid A from the hydrophilic periplasm during LPS transport to the membrane.

Biology & Microbiology

Two common transposable elements associated with interspersed repeated DNA are ________ and ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

If you were raising frying chickens, how much meat could you produce given a metric ton (1000 kg, or 2200 lb) of feed?

A) 200 kg B) 100 kg C) 800 kg D) 1000 kg

Biology & Microbiology

The big difference between prokaryotes and eukaryotes is that eukaryotes have ________, and prokaryotes do not.

What will be an ideal response?

Biology & Microbiology