A decomposer is also called a saprotroph
____________________ Indicate whether the statement is true or false.
T
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________ are microbial infections acquired by hospital patients with noninfectious diseases because they are compromised hosts
A) Healthcare-associated infections B) Immunocompromised infections C) Pathogenic infections D) Virulent infections
Experiments on selective adhesion between ectoderm, mesoderm, and endoderm derived from amphibian embryos
demonstrated that ____.
a. ectoderm cells have positive affinity for mesoderm cells but negative affinity for endoderm cells b. ectoderm cells have negative affinity for mesoderm cells but positive affinity for endoderm cells c. mesoderm cells have negative affinity for endoderm and ectoderm cells d. ectoderm cells have positive affinity for both endoderm and mesoderm cells e. endoderm cells have positive affinity for both ectoderm and mesoderm cells
________ form when liquid stored in the gallbladder hardens into pieces of stonelike material
Fill in the blank(s) with the appropriate word(s).
Please choose the statement that best describes the immunologic basis of organ or tissue rejection after transplantation.
A) Specific T cell populations recognize non-self MHC molecules on transplanted tissue and mount a cell-mediated immune response damaging the transplant. B) Transplanted tissue is normally rejected only if it becomes infected. C) Organ/tissue transplant rejection is mostly due to Type 2 cytotoxic reactions mediated by IgG and IgM. D) IgE antibodies as well as basophils and mast cells attack the transplanted tissue if they recognize it as "non-self."