Which organisms obtain carbon from CO2?
a. auxotrophs
b. heterotrophs
c. autotrophs
d. chemotrophs
Ans: c. autotrophs
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Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
What will be an ideal response?
Which proteins in the plasma membrane identify a cell as part of the same individual or as foreign?
a. transport proteins b. recognition proteins c. receptor proteins d. cell adhesion proteins e. nuclear proteins
The placenta
A. conducts the mother's blood directly to the embryo. B. is responsible for providing the nutritional needs of the embryo. C. nourishes the egg while it is yet in the ovary. D. is discharged from the body and rebuilt approximately every twenty-eight days.
Erythropoietin stimulates the manufacture of
A) albumin. B) platelets. C) red blood cells. D) white blood cells.