In the uterus, the ____________________ is shed during menstruation. Fill in the blank(s) with the appropriate word(s)
ANS: endometrium
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Diploid (2n) cells in the ____ of mosses, ferns, gymnosperms, and angiosperms divide meiotically and form haploid (1n) spores
Fill in the blank with the appropriate word.
During the third stage of aerobic respiration, electrons and hydrogen ions released by the reactions of the first two
stages are picked up by ____.
a. photosynthetic enzymes and ATP b. CO2 and H2O c. iron and glucose d. NAD+ and FAD e. O2 and ATP
Lymphocytes
A. gain tolerance to self by destruction of lymphocytes that could react against self. B. have membrane receptors that recognize foreign antigens. C. possess MHC antigens for recognizing self. D. develop into clones of B and T cells with extreme variations of specificity. E. All of the choices are correct.
DNA tests on remains thought to be those of Czar Nicholas Romanov II of Russia proved the remains
were his. Indicate whether the statement is true or false.