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.
-involves their factors and
subtests
-Quantitative Reasoning: the
ability to solve numerical problems
-Visual-Spatial Processing: the
ability to analyze visually presented information, including relationships
between objects, spatial orientation, assembling pieces to make a whole, and
detecting visual patterns
-working memory: the ability to
hold and transform information in short-term memory
-each of these 10 areas is
assessed by one to three specific types of items .
Answer:
student 4 bcoz thymine is replaced by uracil in RNA
