Which of the following is not a characteristic of native antigen recognized by T cells?
a. peptides ranging between 8 and 25 amino acids in length
b. not requiring degradation for recognition
c. amino acid sequences not found in host proteins
d. primary, and not secondary, structure of protein
e. binding to major histocompatibility complex molecules on the surface of antigen-presenting cells.
B
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A) radiolucent B) radiopaque C) translucent D) transopaque
Abdominal fat is considered a greater threat to health than hip-and-thigh fat because abdominal fat
A. more easily enters the bloodstream. B. causes lower back ailments that lead to inactivity. C. squeezes the heart. D. reduces lung capacity.
Complete proteins contain all the essential amino acids and are typically ____
a. devoid of enzymes b. of plant origin c. stored in the body as adipose tissue d. high in HDL e. of animal origin
The term metastasis refers to a
A. potentially cancerous cellular changes. B. lump of cells. C. migration of cancer cells from the primary tumor. D. type of cancer.