The immunoglobulin class that is the only one capable of crossing the placenta is
A. IgA.
B. IgE.
C. IgM.
D. IgG.
E. IgD.
Answer: D
You might also like to view...
People who have a subclinical case of a disease are frequently ________ of a particular disease
A) fomites B) carriers C) vectors D) vehicles
48. If, according to one hypothesis, Najash evolved from terrestrial, burrowing snakes, which of the following best reflects the adaptive or selective benefit for other snakes to have lost their pelvis and hindlimbs?
A. In situations of flooded burrows and land surface, the snakes could swim better without hindlimbs and pelvis. B. Grasping prey would have been easier and more efficient without the hindlimbs and pelvis. C. Chasing prey through tunnels and burrows could be easier without the function and obstruction of hindlimbs and pelvis. D. Chasing prey would have been easier, because the snakes would be much faster without hindlimbs and pelvis. E. Burrowing snakes would be better able to dig their burrows without the hindlimbs and pelvis.
What are the specialized cells used for sexual reproduction (for example, sperm cells)?
What will be an ideal response?
Identify the labeled structures in the diagram of nephron anatomy.
a: ________b: ________c: ________d: ________e: ________f: ________g: ________h: ________i: ________j: ________k: ________l: ________
What will be an ideal response?