Carbon dioxide and water combine to form:
A) hydrochloric acid. B) nitric acid.
C) carbonic acid. D) carbaminohemoglobin.
Answer: C
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The smooth, curved surface of the acetabulum that articulates with the head of the femur is called the ________ surface.
Fill in the blank(s) with the appropriate word(s).
Antibody functions include all of the following except ________.
A) binding and inactivating chemical toxins released by bacteria or other microorganisms B) cross-linking cell-bound antigens on red blood cells when blood types are properly matched C) linking soluble antigens together so that they fall out of solution D) targeting foreign cells so that complement proteins can cause cellular lysis
What type of epithelium lines the vagina?
A) simple squamous epithelium B) stratified squamous epithelium C) transitional epithelium D) stratified cuboidal epithelium
Presentation of a foreign antigen to a cytotoxic T cell requires a ________.
A. Class-1 MHC molecule and coreceptor CD4 B. Class-2 MHC molecule and coreceptor CD8 C. Class-2 MHC molecule and coreceptor CD4 D. Class-1 MHC molecule and coreceptor CD8