Osmotic concentration in the loop of Henle increases as NaCl as water moves out.
a. true
b. false
Answer: a. true
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Which of the following is NOT a characteristic of seeds?
A. They contain endosperm. B. They have an embryo. C. They may differ in amount of water content. D. They usually vary in size. E. They usually have about the same amount of water.
All of the following teeth are found in adult vertebrates except
A. precanines. B. molars. C. incisors. D. premolars. E. canines.
Which of the following organelle is not part of the endomembrane system?
A. endoplasmic reticulum B. Golgi apparatus C. lysome D. peroxisome
A pressurized airplane cabin and an oxygen tent over a patient in a hospital both address the need of a person for oxygen. How do these compare?
Select one: a. The oxygen tent increases the air pressure to increase the PO2. b. Airplane cabin pressure lowers the partial pressures for normal breathing. c. Both use the same mechanism to force hemoglobin to increase affinity for oxygen. d. The oxygen tent increases concentration of O2 while the airplane maintains total air pressure without changing concentrations. e. Both increase the PO2 in order to force the exchange of oxygen for carbon dioxide.