Humoral and Cell-Mediated Immune Responses The immune system distinguishes two groups of foreign substances. One group consists of antigens that are freely circulating in the body. These include molecules, viruses, and foreign cells.
Humoral immunity is immunity from serum antibodies produced by plasma cells. More specifically, someone who has never been exposed to a specific disease can gain humoral immunity through administration of antibodies from someone who has been exposed, and survived the same disease.
Allosteric regulation occurs at these points where the concentration of the substrate and/or products is important for the activation and inhibition of the enzyme.
I believe the answer is Yy. Although Y represents the dominant trait for yellow, it being paired with the recessive trait, y, has the chance of a plant with green seeds to be produced in the next generation.
An increased rate of evaporation would allow the funnel to grow increasingly larger as the storm updraft takes in warm moist air at a more rapid rate. This would also increase the strength and speed of the tornado's winds. With that said, your best answer is D.
