Choose the one most appropriate answer for each.
A. Primary productivity
B. Bicarbonate
C. Food chain
D. Net primary production
E. Biogeochemical cycles
F. Detritus
A. Rate at which energy becomes stored in organic compounds through photosynthesis
B. Main form of carbon storage in sea water; taken up by marine producers and converted to carbon dioxide
C. A straight-line sequence of steps by which chemical bond energy moves to higher trophic levels
D. The amount of energy from autotrophs that is available to first-level consumers
E. The movement of a nutrient among environmental reservoirs and into and out of food webs
F. Particles of organic waste products; dead, or partly decomposed tissues
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MHC II molecules present
A) processed foreign antigens from proteasomes. B) processed self-antigens from phagolysosome. C) antibodies. D) T cell antigens.
Describe the stages at which genetic sex, gonadal sex, and phenotypic sex are established
What will be an ideal response?
What cycle does a female dog undergo, and what does the cycle lack?
a. an estrous cycle, which lacks ovulation b. an estrous cycle, which lacks menstruation c. a menstrual cycle, which lacks ovulation d. a menstrual cycle, which lacks implantation
Which of the following recognizes and binds to MHC I proteins and helps stabilize the binding of epitopes to T cell receptors?
A) CD8 B) MHC I C) CD26 D) CD4 E) CD95