The valve between "C" and "E" is the

a. right AV valve.
b. right pulmonary valve.
c. left AV valve.
d. left pulmonary valve.
e. aortic valve.


B

Biology & Microbiology

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The fetus is not rejected because

A. it is too small. B. it is in an immunologically privileged site. C. the father is immunosuppressed. D. it has no antigens. E. it is in an immunologically privileged site AND the father is immunosuppressed.

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The "hematocrit" is a measure of the total volume of which blood constituent?

A. plasma B. leukocytes C. erythrocytes D. platelets E. None of the choices for this question are correct.

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Which of the following lists the stages of embryonic development in the correct order

following fertilization?

a. zygote, morula, blastula, gastrula, embryo b. morula, blastula, gastrula, zygote, embryo c. gastrula, blastula, morula, embryo, zygote d. embryo, blastula, gastrula, morula, zygote

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The process by which the major land masses have shifted their positions, changed shapes, and separated from each other, is known as

A. differential land movement. B. cotranslational sorting. C. depolarization of land masses. D. continental drift. E. cyclic land drift.

Biology & Microbiology