MHC markers function in ________
a. histamine and prostaglandin release
b. memory of previously encountered antigens
c. antigen reception in T cells
d. self-recognition and antigen presenting
d
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A biologist discovers a new species of organism adapted to living in a deep underground cavern that provides no source of free water. The organism is eyeless and covered by fur, and it has a four chambered heart with a closed circulatory system. What excretory system adaptations to this extreme environment might the biologist expect to find?
A. Very long malpighian tubules B. Very short malpighian tubules C. Metanephridia with a large number of nephridiopores D. Nephrons with long loops of Henle E. Nephrons with short loops of Henle
The cell's hereditary information is stored in ____
a. DNA b. protein c. RNA d. glucose e. amino acids
Which is characteristic of the adult thymus?
A. Continuing growth, corresponding to numerous infections over time B. Fusion of its lobes into a single lobe C. Infiltration by adipocytes D. The adult thymus is identical in structure to the child's thymus E. Total degeneration; only children have thymus tissue
The process of ________ enables DNA to pass its information to RNA
Fill in the blank(s) with correct word