A female's lifetime supply of ________ is present in her ovaries at birth.
A. primary oocytes
B. secondary follicles
C. secondary oocytes
D. polar bodies
Answer: A
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What feature of the small intestine greatly expands its surface area, facilitating absorption?
Defense of the body against a particular pathogen is provided by
A) nonspecific immunity. B) specific immunity. C) immunological surveillance. D) skin defenses. E) fever.
What is formula weight?
A) the sum of the atomic weights of its component atoms B) the weight in grams equal to the element's atomic weight C) the total weight of an element including the isotopes D) the average weight of an element's different atomic masses and proportions of its different isotopes E) the sum of the atomic weights of the elements making up an ionic compound
When an antigen is bound to an antibody, it binds to:
A. the heavy immunoglobulin chain only. B. the light immunoglobulin chain only. C. a specific antigen-binding site formed by heavy and light chains. D. a hypervariable region of immunoglobulin DNA. E. gamma immunoglobulin only.