The job of a natural killer cell is to:
A. release histamine.
B. destroy invading pathogens through
phagocytosis.
C. destroy infected or abnormal host cells.
D. trigger inflammation.
C
You might also like to view...
What would happen if you placed a trout (freshwater fish) into a saltwater tank at the aquarium and made some observations?
A. The fish would take on water quickly and get bloated. B. The fish would lose water and look wrinkled. C. The fish would take on water initially, but could reverse the direction of Cl– ion movement to deal with excess water. D. The fish would lose water initially, but could reverse the direction of Cl– ion movement to deal with excess water.
A house plant seems to be growing slowly and lacks its normal bright green color. You call a botanist for advice. She suggests that the plant may be deficient in magnesium (Mg2+). Why are these symptoms associated with Mg2+ deficiency?
A) Mg2+ is important in the structure of many amino acids. B) Lack of Mg2+ in the soil allows pathogenic bacteria to grow. C) Mg2+ is required before NADPH can function. D) Mg2+ is an important component in chlorophyll. E) Cytochromes require Mg2+ to function properly.
A faster-than-normal heart rate is called:
a. brachycardia b. atrial fibrillation c. tachycardia d. ventricular fibrillation e. stroke
Name the individual who, while working with the garden pea in the mid-1850s, demonstrated quantitative patterns of heredity and developed a theory involving the behavior of hereditary factors
What will be an ideal response?