True or False: Group selection is not an evolutionarily stable strategy
A. true
B. false
A
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Which of the following is NOT a reason respiration in water is challenging?
A. Water is very dense relative to air. B. Water holds relatively little oxygen compared to air. C. Water moving over thin respiratory epithelial surfaces can create osmotic challenges. D. Dessication of respiratory surfaces is a significant problem. E. All the choices except "dessication of respiratory surfaces" are correct.
An agent that kills bacteria is referred to as ________.
Fill in the blank(s) with the appropriate word(s).
Monozygotic twins:a
occur when two eggs are ovulated. b. may be of different sexes. c. have different sets of genes. d. are called identical twins. e. result from the fertilization of two sperm cells.
When you hyperventilate (breathe too fast), respiratory alkalosis (decreased concentration of hydrogen ions in the blood) can occur, which can cause you to faint. A common but potentially dangerous method to reverse respiratory alkalosis is to hold a
paper bag over your mouth and take normal breaths, thereby rebreathing the exhaled air. How might this method reverse respiratory alkalosis? A) Inhaling oxygen exhaled into the bag will cause oxygen to diffuse back into the blood and react with water to form carbonic acid, and blood pH will decrease. B) Inhaling oxygen exhaled into the bag will cause oxygen to diffuse back into the blood and react with water to form carbonic acid, and blood pH will increase. C) Inhaling carbon dioxide exhaled into the bag will cause carbon dioxide to diffuse back into the blood and react with water to form carbonic acid, and blood pH will increase. D) Inhaling carbon dioxide exhaled into the bag will cause carbon dioxide to diffuse back into the blood and react with water to form carbonic acid, and blood pH will decrease.