Germ layers are
A. layers of cells surrounding the egg prior to fertilization.
B. colonial protists arranged in layers.
C. layers of gametes.
D. layers infected with bacteria.
E. embryonic layers with different developmental potentials.
Answer: E
You might also like to view...
What are inhibitors?
A. Molecules that inhibit protein synthesis B. Molecules that bind to an enzyme to help its reaction C. Molecules that prevent enzymes from working D. Molecules that allow reactions to proceed more quickly
Which of the following organisms is negative for catalase, indole, and arginine dihydrolase tests and pits the agar on a sheep blood agar plate?
a. E. corrodens b. W. virosa c. P. maltophilia d. S. paucimobilis
The proteobacterium Rhizobium lives in a close association with legume roots, providing a source of nitrogen for the plant. In return, the plant provides Rhizobium with food produced by photosynthesis. In this relationship, Rhizobium is an example of a(n):
A. pathogen B. parasite C. producer D. methanogen E. mutualist
The fusion of two gametes produces a
A) zygote. B) schizont. C) chromatid. D) centromere. E) merozoite.