Which of the following statements is FALSE?
A) The pH of blood is slightly basic.
B) The more hydrogen ions in a solution, the more acidic the solution.
C) When acids and bases are mixed, they react with each other to form water and a salt.
D) When the hydrogen ion concentration decreases, the hydroxyl ion concentration also decreases.
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Question 2) A red blood cell placed in pure water would ________.
A) neither shrink nor swell
B) swell and burst
C) swell initially, then shrink as equilibrium is reached
D) shrink
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Question 3) In certain kinds of muscle cells, calcium ions are stored in ________.
A) the cytoplasm
B) both smooth and rough ER
C) the smooth ER
D) the rough ER
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Question 4) The numbers listed represent the number of electrons in the first, second, and third energy levels, respectively. On this basis, which of the following is an unstable or reactive atom?
A) 2
B) 2, 8
C) 2, 8, 1
D) 2, 8, 8
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Question 5) Each daughter cell resulting from mitotic cell division has the exactly same genetic composition.
Indicate whether the statement is true or false
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Question 6) Which of the following structures would aid a cell in allowing more nutrients to be absorbed by the cell?
A) stereocilia
B) flagella
C) primary cilia
D) microvilli
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Question 7) Salts are always ________.
A) double covalent compounds
B) single covalent compounds
C) ionic compounds
D) hydrogen bonded
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Question 8) Which of the following is FALSE regarding the membrane potential?
A) The resting membrane potential is determined mainly by the concentration gradients and differential permeability of the plasma membrane to K+ and Na+ions.
B) The resting membrane potential is maintained solely by passive transport processes.
C) The resting membrane potential occurs due to active transport of ions across the membrane due to the sodium-potassium pump.
D) In their resting state, all body cells exhibit a resting membrane potential.
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Question 9) Which of the following is a general function for a fibrous protein?
A) protein management
B) transport
C) structural framework
D) body defense
E) catalysis
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Question 10) Which of the following is a function of a plasma membrane protein?
A) molecular transport through the membrane
B) forms a lipid bilayer
C) circulating antibody
D) oxygen transport
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