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Antidiuretic hormone (ADH) is responsible for the retention of water in the body. In the kidney, ADH increases reabsorption at the collecting duct. Which of the following physiological responses will be most likely in a patient suffering from severe dehydration?…
Similarities in chemical behavior can be observed between elements within the same family in the periodic table. For instance, sodium and potassium react with oxygen to produce a metal oxide. Which of the following gives the balanced reaction for the…
What is the oxidation state of chromium in the dichromate ion, Cr2O72-? -2 0 +6 +12 Click for Explanation The rules for oxidation states are as follows: 1. In a compound, oxidation states of all elements sum to the net…
Mono-nucleated muscle cells are a predominant muscle fiber found in all of the following EXCEPT: the stomach the pharynx the heart the lungs Click for Explanation This question is testing your familiarity with the predominant muscle cell types found in…
The combination of the cornea and the crystalline lens shown below serves as a converging lens. In a perfectly functioning eye, an image is projected at a fixed distance on the retina, which is approximately 2cm from the lens. What…
Which of the following pure compounds form ionic bonds? CaCl2 HCl NaF Mg(OH)2 I only I and II only I, III, and IV I, II, III, and IV Click for Explanation An ionic bond is formed between two atoms when…
Color blindness (B) is a recessive (b) sex-linked disorder that results from a mutation on the X chromosome. What would be the most likely phenotypes of the male and female progeny when a colorblind man and a woman with no…
Which of the following, heterocyclic amine and/or secondary amine, best describes the molecule shown below? Heterocyclic amine only Secondary amine only Both heterocyclic amine and secondary amine Neither heterocyclic amine nor secondary amine Click for Explanation Secondary amines follow the…
The voltage of a galvanic cell, E, depends on the concentration of reactants and products. The Nernst equation, E = Eo – (0.0592/n)log(Q) can be used to calculate the cell potential. Eo is the standard cell potential, n is the…
A woman stands 1m in front of a plane mirror. What is the magnification and distance from the woman to her mirror-image? 1/2 and 2m 1 and 1m 2 and 1m 1 and 2m Click for Explanation A flat plane…