Which of these statements about the composition of membranes is generally true?
A. The lipid composition of all membranes of eukaryotic cells is essentially the same.
B. All biological membranes contain cholesterol.
C. Free fatty acids are major components of all membranes.
D. The inner and outer membranes of mitochondria have different protein compositions.
Answer: D. The inner and outer membranes of mitochondria have different protein compositions.
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Consider the following reaction at equilibrium: What would be the effect of adding additional H2CO3?
A) It would drive the equilibrium dynamics to the right. B) It would drive the equilibrium dynamics to the left. C) Nothing would happen, because the reactants and products are in equilibrium. D) The amounts of CO2 and H2O would decrease.
Generally, r-selected organisms exhibit:a
short life spans and early maturity. b. long life spans and extended parental care of offspring. c. long development time to maturity, but small body size. d. large body size and extended parental care of offspring. e. large body size, but short life spans.
Organisms that have their optimum growth pH between 8.5 and 11.5 are called ________.
Fill in the blank(s) with the appropriate word(s).
Which part of the lower respiratory tract integrates the respiratory system with the cardiovascular system?
A. sinus cavity B. esophagus C. bronchial tree D. lungs E. trachea