-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>
The best answer should be
D) Food component that can be stored in the body for future energy needs
Scar tissue is made of a protein called collagen
Answer:
Heredity.
Explanation:
Heredity refers to the traits or characteristics that is passed genetically from the parents to the offsprings or passed from one generations to another. It can be through sexual or asexual reproduction.
Heredity play role in our behavior, personality and mental processes because these all are determined by the traits or characteristics we inherited from our parents.
Answer:
B, lung cell, lung tissue, lung, pulmonary system
Explanation:
Lung cells are also called as pleural cells. Lung cells to form lung tissue which then forms the lung and lung and its function forms the pulmonary system. The complexity increases from cell to organ system.
Pulmonary system plays a major role in respiration. Lung cells once damaged are slow to regenerate. Alveoli are the sacs in the lungs that take up the oxygen from the inspirited air and then transfers it to the tissue.
