A correct comparison between a benign and a malignant tumor is that ________.
A. benign tumors are not the result of a failure of a cell cycle control system; malignant tumors are
B. benign tumors do not metastasize; malignant tumors do
C. benign tumors are composed of cancer cells; malignant tumors are not benign tumors
D. do not form lumps; malignant tumors do form lumps
Answer: B. benign tumors do not metastasize; malignant tumors do
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Which of the following is a correct partial sequence of the structures through which blood flows in a single pass through the human circulatory system?
A. left atrium, left ventricle, aorta, arteries, capillaries. B. capillaries, veins, vena cava, right atrium, right ventricle. C. right atrium, right ventricle, pulmonary arteries, capillaries. D. capillaries, pulmonary veins, left atrium, left ventricle. E. all of the above. F. none of the above.
Which of the following is a true statement about plant reproduction?
A) Embryophytes are small plants in an early developmental stage. B) Male and female bryophytes each produce a type of gametangia. C) Eggs and sperm of most land plants swim toward one another. D) Bryophytes are limited to asexual reproduction.
Which of the following relationships best describes the partial pressure of oxygen (pO2) in the lung, red blood cells, and blood plasma?
A. pO2 lung < pO2 blood plasma < pO2 red blood cell B. pO2 blood plasma < pO2 lung < pO2 red blood cell C. pO2 red blood cell < pO2 lung < pO2 blood plasma D. pO2 red blood cell < pO2 blood plasma < pO2 lung
______ or septic shock is characterized as by massive drop in blood pressure that can result from the release of LPS in gram-negative infections
a. endotoxic b. toxoid c. exotoxic d. hemolytic