Which of the following statements about pancreatic enzymes is incorrect?
a. trypsinogen is secreted in an inactive form.
b. pancreatic amylase digests carbohydrate.
c. pancreatic lipase is responsible for triglyceride digestion.
d. except for trypsinogen, other proteolytic enzymes are secreted in active form.
e. trypsinogen is activated by enterokinase.
D
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A mutation affecting the cytoplasmic distribution among dividing daughter cells in female meiosis prevents the normal distribution between the secondary oocyte and the polar body. Instead, two identically sized daughter cells with the same amount of cytoplasm are produced after each division while polar bodies are still designated and disintegrated. Knowing the main function of the polar body, what effect might this mutation have?
A. Embryos developed from the mutated secondary oocyte will lack the X chromosome. B. Sperm will not be able to penetrate the egg. C. Oocytes with abnormal chromosome numbers will result and produce zygotes with further abnormal numbers. D. After fertilization, the zygote may not have enough organelles and nutrients to support further cell divisions.
Which answer is true about NET water movement between two solutions that are separated by a semipermeable membrane
a. It will always be toward the solution with the lower osmotic pressure. b. It might be toward the solution with the lower osmotic pressure. c. It will always be toward the solution with the lower hydrostatic pressure. d. It might be toward both solutions at the same time. e. None of the above statements are true.
When the penis fails to become erect, this condition is called __________.
A) a hernia B) infertility C) impotency D) cryptorchidism E) orgasm
Depletion of extracellular K+ may induce ________.
A. hyperventilation B. metabolic acidosis C. metabolic alkalosis D. None of the choices are correct.