The right answer is D (less responsive to antigens)
It is proven that, after puberty, thymus activity (an organ that is included in the lymphatic system, producing T cells that pick up antigens) decreases and that in adult and aged people the thymus has no role. Work done in humans indicate that in fact the cellularity begins to decline from birth in favor of lymphocyte perivascular spaces and connective and adipose tissue, which leads to a decrease in the capture of antigens.
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
Answer:
They can alter the phenotype of an organism
Answer:
Explanation:
Corrected definitions:
<h3>Potential energy:</h3>
- The energy possessed by a body due to its position is called Potential Energy.
<h3>Kinetic Energy:</h3>
- The energy possessed by a body due to its motion is called Kinetic Energy.
<h3>Chemical Energy:</h3>
- The energy possessed by the body due to its atoms and molecules is called chemical energy.
<h3>Thermal Energy:</h3>
- The energy in a system due to its temperature is called Thermal Energy.
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Answer:
option C is correct that is 3` to 5` continuously
Explanation:
when replication begins the two parent DNA strand are separated one of this is called leading strand and is replicated continuously in the 3` to 5` direction the other strand is lagging strand and is replicated discontinuously in short sections
