Erythrocytes are synthesized in what organ and under the control of what chemical?
A) kidney, under control of transferrin
B) bone marrow, under control of bilirubin
C) liver, under control of bilirubin
D) bone marrow, under control of erythropoietin
E) liver, under control of erythropoietin
Ans: D) bone marrow, under control of erythropoietin
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Which of the following are common disorders of the axial skeleton? Select all that apply.
_____ Cleft palate _____ Spondylosis _____ Medial epicondylitis _____ Spinal stenosis _____ Gouty arthritis
Which of the following statements about oogenesis is false?
A) The polar body is the egg cell which is then fertilized by the sperm cell. B) Far fewer eggs are produced by the female than sperm produced by the male. C) Meiosis I begins in the female fetus. D) Meiosis II is not completed until after the egg cell makes contact with the sperm cell. E) The lack of viable oogonia in the ovaries leads to menopause in the female.
A model airplane is being flown at the end of a cord 20 feet long. If the speed of the airplane remains constant, but the cord is shortened to 15 feet, what will be the effect on the radial acceleration of the airplane?
A. it will increase B. it will decrease C. it will remain the same D. one must know the weight of the airplane in order to answer the question
the basic structural and functional unit of living organisms is the ___________?
a) plasma membrane b) organelle c) cell d) nucleus