<span>B cells recognize their specific antigen on the surface of the invading pathogen or recognize toxins secreted by pathogens. Then, some B cells clone into memory B cells, while others multiply as plasma cells, which generate antibodies that bind to pathogens and block them from entering your healthy cells.</span>
Answer:
Adequate Intake (AI) value
Explanation:
Its often used when RDA isn't known. The values of AI and RDA vary by age and gender.
Recommended Dietary Allowance (RDA) of a healthy people is the average daily level of intake needed to meet the nutrient requirements of approximately all (97%-98%) healthy people.
Answer: alternative D.
Explanation: The animals that go through this process understand that everytime they drink the unusual-tasting liquid they will be injected, being that a very unpleasant series of events. They are conditioned, therefore, to be afraid of the unpleasantness of this process by associating pain to the actions that are part of it.
Answer:
The correct answer is : low lying.
Explanation:
Placenta is generally characterized on the basis of the degree of coverage to the internal os that are as given below:
Total placenta previa, in this the the placenta covers the cervical os where as the partial placenta previa the internal os is covered partially by the placenta.
Marginal placenta is present on the margin or edge of cervical os and in low lying it is present near but not reach it.
Thus, the correct answer is : low lying
Well the male puts his semen in the women's vaginal, then the women's ovaries will release one egg, then the sperm will find its way to the egg that the women is releasing. When the sperm gets inside the egg, the baby is starting to form but at first it will be called a fetas because its not transformed into a full born baby yet. The baby is not born in a egg its born in the <span>amniotic</span><span> sac which is clear and that's were the tube of the baby will be in order to survive and eat.</span>
