Upon activation, a T-lymphocyte
A. ceases dividing and becomes a memory cytotoxic helper cell.
B. ceases dividing and becomes a plasma cell.
C. proliferates to form clones and memory cells.
D. proliferates to form B cells and plasma cells.
Answer: C
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________ molecules form the major component of the plasma membrane and are arranged in the form of a bilayer
A) Phospholipid B) Protein C) Sugar (carbohydrates) D) Cholesterol
Briefly describe phenylketonuria (PKU)
A) PKU is the accumulation of uric acid crystals due to an inability to catabolize purines. B) PKU is the accumulation of ketone bodies due to the breakdown of fatty acids and amino acids. C) PKU is an inherited metabolic disorder resulting from an inability to convert phenylalanine to tyrosine. D) PKU occurs as a result of inadequate protein intake. E) PKU is an eating disorder that involves excessive food consumption followed by purging.
What is a large, active phagocytic cell?
A. Macrophage (large, mobile white blood cell) B. Sperm cell C. Columnar cells of upper respiratory tract D. Red blood cells E. Columnar cells of small intestines
Red blood cells, or ____________________, are biconcave, disc-shaped cells.?
Fill in the blank(s) with correct word