QUESTION 1Which of the following statements is true?Economic profit equals accounting profit minus implicit costs. All of the above. A fixed input is any resource for which the quantity cannot change during the period under consideration. The short run is any period of time in which there is at least one fixed input. In the long run there are no fixed costs. 2 points QUESTION 2Which of the following statements is true?When marginal cost is below average cost, average cost rises, when marginal cost is above average cost, average cost falls. The law of diminishing returns states that beyond some point the marginal product of a variable resource continues to rise. The marginal product is the change in total output by adding one additional unit of a fixed input. When marginal productivity of a variable input is falling then marginal costs of production must be rising. Fixed costs are costs which vary with the output level. 2 points QUESTION 3Which of the following statements is false?AFC = TFC/Q. TC = TFC + TVC. AVC = ATC – AFC. ATC = TC/Q. MC equals the change in ATC divided by the change in Q. 2 points QUESTION 4If a firm enlarges its factory size and realizes higher average (per unit) costs of production then: it has experienced constant returns to scale. it has experienced diseconomies of scale. the long-run average cost curve slopes downward. the long-run average cost curve shifts upward. it has experienced economies of scale.
1. Which of the following statements is NOT correct?A. The walls of the ventricles are thicker because the ventricles pump blood under higher pressure over greater distances. B. The walls of the atria are thicker because the atria receive blood under pressure. C. The wall of the right ventricle is thinner than that of the left ventricle because the right side of the heart pumps blood a shorter distance at lower pressure. D. Although the right side of the heart has a smaller workload, the right and the left ventricle simultaneously eject the same amount of blood. E. All of these choices are correct2. The semilunar valves open when pressure in the right and left ventricles exceeds that in the pulmonary trunk an aorta, respectively. A. TrueB. False3. Contractility can be decreased bya,increased end-diastolic volumeb, presence of positive inotropic substancesc. decreasing inflow of calcium ionsd. increased end-diastolic volume and presence of positive inotropic substance. e. increased end-diastolic volume, presence of positive inotropic substance, and decreasing inflow of calcium ions. 4. When compared to auto rhythmic fibers, contractile cardiac myocytes. a. have leaky sodium channels to cause spontaneous depolarizationb. have a peak action potential of about +10 mV. c. re polarize to about -60mVd. have a resting membrane potential of about -90mVe. depolarize when voltage-gated slow calcium channels close
Which of the following statements would be true if the linkage between two traits were complete?The rules of independent assortment would hold true. Only the parental combinations of phenotypes could appear in the progeny. Combinations of phenotypes different from those seen in the parents would be produced. The exchange of genetic material between chromosomes would be frequent. Flag this QuestionQuestion 81pts What effect does gene linkage have on the overall variety of individuals produced?It causes excessive crossing-over within the genome. It decreases the probable variation between individuals. It increases the probable variation between individuals. It does not affect the probable variation between individuals. Flag this QuestionQuestion 91pts Which of the following genotypes represents a human female?XXXYYYZzFlag this QuestionQuestion 101pts An XX individual develops as a male. Which of the following statements offers the most likely explanation?This occurs when the egg does not contribute any genetic material. A piece of a Y chromosome has become attached to one of the X chromosomes. This is the usual situation for an XX individual. This occurs when the sperm does not contribute any genetic material. Flag this QuestionQuestion 111pts Chromosomes are composed of DNA andproteins. RNA. alleles. lipids. Flag this QuestionQuestion 121pts Males with a recessive X-linked allele that causes a disorder do not always show symptoms because they can also carry a dominant allele on their Y chromosome. TrueFalse
Assuming that variables value1 and value2 are both declared as ints, which of the following statements causes the result of the calculation to be truncated?