Which term best describes the movement of NH4+ ions into a cell down an electrochemical gradient?

a. a symport
b. passive diffusion
c. facilitated diffusion
d. active transport


Ans: c. facilitated diffusion

Biology & Microbiology

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Which of the following is NOT involved in nonspecific defenses?

A. natural killer cells B. monocytes C. neutrophils D. mast cells E. B cells

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The causative agent of plague is

A. Vibrio cholerae. B. Staphylococcus aureus. C. Brucella abortus. D. Yersinia pestis.

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Explain the difference between benign and malignant tumors

What will be an ideal response?

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