<span>A dichotomous key is very easy to use because it provides only two choices. </span>
Answer:
yes
Explanation:
it has 2 layers, one fat layer and the other is a feather layer to stay warm
When someone does not have insurance:
• Infected patient with contagious disease won’t be treated so the infection might be spread,
• Emergency treatment and care for uninsured patient will cost a lot more than for the patient with insurance,
• Staying in hospital rooms and using hospital resources is more expensive.
-The number of B cells producing the antibody is proportional to the concentration of that antibody.
-On day 16, one out of 100000 B cells are specific for antigen A
\frac{1}{100000} = 1 x 10⁻⁵ B cells
- on day 16, Antibody concentration is 2 × 10¹= 20 Antibodies
- on day 36, antibody concentration 8 × 10³.= 8000
20 antibodies ------------ 1 x 10⁻⁵ B cells
8000 antibodies--------------x
x= (8000 x 1 x 10⁻⁵)/ 20
x= 4x10⁻³ or 1 in 250 are <span>B cells specific for antigen A</span>
