The chemical symbol O?O means ________.
A) zero equals zero
B) both atoms are bonded and have zero electrons in the outer orbit
C) the atoms are double bonded
D) this is an ionic bond with two shared electrons
C) the atoms are double bonded
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Limited branching of preganglionic axons allows for
A. mass activation. B. local and discrete activation. C. rapid changes in numerous structures at once.
An adult Holstein cow that eats 50 pounds of dry matter and produces 80 pounds of milk may require as much as ________________________________________ pounds of water per day
Fill in the blank(s) with correct word
Complement proteins
A. are hormones found in the blood. B. do not attract neutrophils, monocytes, macrophages, or eosinophils. C. are on the surface of macrophages. D. can form holes in the plasma membrane of target cells. E. may cause the release of interferon.
Which organ transports food from the pharynx to the stomach?
A) Small intestine B) Trachea C) Esophagus D) Larynx