Each antibody molecule consists of
A) two light and two heavy protein chains.
B) one light and one heavy protein chain.
C) a "heavy" protein chain.
D) a "light" protein chain.
E) various combinations of light and heavy protein chains.
Answer: A
You might also like to view...
What type of cells include central nerves, brain cells, and heart muscle cells?
a. Nondividing cells b. Mitotic cells c. Facultative mitotic cells d. Mast cells
What is the summing up of the excitatory and inhibitory signals by a neuron called?
A. firing B. polarization C. addition D. depolarization E. integration
Many fern gametophytes are hermaphrodytes, meaning they can produce both sperm and egg. Why is this necessary for a fern, but not for an angiosperm?
a. If a seed colonized a new habitat alone, it could still reproduce b. The gametophyte could produce multiple types of spores c. The gametophyte could produce multiple types of seeds d. If a spore colonized a new habitat alone, it could still reproduce e. Angiosperm gametes are already diploid
Refer to the accompanying figure. What is the function of the structure labeled as 4?
a. To insulate the axon b. To release neurotransmitters c. To synthesize cell body organelles d. To receive inputs from other neurons e. To send retrograde signals to the cell body