contained solution that has an osmolarity of 300 and fluid in the surrounding ti
ID: 275482 • Letter: C
Question
contained solution that has an osmolarity of 300 and fluid in the surrounding tissue had tubule 24. If the tubule of the kidney an osmolarity of 450. a. the surrounding fluld would be hypotonic and water would leave the b. the surrounding fluid would be hypotonic and water would enter the ?. the surrounding fuld would be hypertonic and water would enter the tutule d. the surrounding fluid would be hypertonic and water would leave the tubule Part B, Chemistry (questions 25-33) 25. Element listed below which is NOT among the four most frequently found elements in living mater e. nitrogen a carbon b. hydrogen ?. sodium d. oxygen Potassilum has one electron in its outermost shell. Therefore, to complete its outer shell, potassium is most lkely to: ?.gain 7 electrons b. lose 7 electrons c. gain one electron d. lose one electron 27. When an electron is transferred from one atom to another, the resulting opposite charges attract to form bonds . lonic d. covalent e.none of these a.hydrogen b polar covalent 28. Type of chemical bond in which electrons are shared by two atoms a hydrogen b. ionic C. isotopic d. electronic 29. Water is said to be a polar compound because the shared electrons spend more time around the oxygen atom than the hydrogen atoms ?.truo b. false 30. What is the concentration of 360 grams of glucose (molecular weight 180 o/mol) placed in 200 ml of water? a. 1.0 molvirer b. 10 moliter C. 0.1 molliter d. 0.04 molliter 31. The breakdown of fats (triglycerides) into free fatty acids is an example of a. an anabolic reaction b. an exergonic reaction c. a reaction that requires energy d. (a) and (b) are correct e. (a) and (c) are correct 32. The rate of chemical reaction may be affected by a presence of enzymes b. concentration of reactants c, concentration of products d. temperature e. all of these 33. When the following reactions are at equilbrium: A a. more water is formed than H and o b. less water is formed than H and Co c. the amounts of H, O and H2O are equal d. reaction A and reaction B are occurring at the same rate e. none of the above Part C, General Science (questions 34-40) 34 If the electrical charge inside a cell was -70 millivolts, how many volts would this be? a-0.7 volts b.-0.07 volts -7.0 volts d-70,000 volts e -70 voltsExplanation / Answer
24. Option D is correct.
Water flows from hypotonic solution to hypertonic solution.
Kidney tubule is hypotonic to the surrounding solution in the given case.
25. Option C is correct.
Sodium is the least commonly found in living organisms among the given elements.
26. Option D is correct.
Potassium loses one electron to attain octet state.
27. Option C is correct.
An ionic bond is formed when an electron is transferred between two atoms.
28. Option E is correct.
A covalent bond is formed when an electron pair is shared between two atoms.
29. True
30. Option B is correct.
M = (W/MW)(1000/V) = (360/180)(1000/200)
= 10 M
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