A rise in the blood concentration of hydrogen ions will make the blood more acidic and cause a(n) ________ to restore homeostasis
A) increased vagus nerve impulse
B) relaxation of the diaphragm
C) increased breathing rate
D) decreased breathing rate
C
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The strands in a DNA molecule are: (choose all that apply)
A. antiparallel. B. complementary. C. identical. D. perpendicular. E. covalently bonded to each other.
What would occur if the mother's immune system recognized the syncytiotrophoblast as a foreign tissue?
What will be an ideal response?
When oxygen is unavailable during heavy exercise what process do muscle cells use for energy generation?
A. Glycolysis coupled with lactate fermentation B. Anaerobic respiration C. Glycolysis coupled with alcohol fermentation D. Aerobic respiration
Electron microscopes use electrons rather than light to view a specimen. Some of these microscopes pass a stream of electrons through a specimen. Both the stream of electrons and the specimen must be in a vacuum chamber. What is a limitation of using such an electron microscope?
A) Living specimens cannot be observed. B) Prokaryotic cells cannot be examined. C) Images appear very fuzzy because of low resolution. D) The power of magnification decreases.