Cells called ______________ release chemicals that kill bacteria and everything else in an area, including themselves.

A. monocytes
B. macrophages
C. basophils
D. neutrophils


Answer: D. neutrophils

Biology & Microbiology

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The attraction between Na+ cations and Cl? anions forms ____ that hold together the compound NaCl

a. polar covalent bonds b. van der Waals forces c. ionic bonds d. hydrogen bonds e. nonpolar covalent bonds

Biology & Microbiology

When the bacteria Wolbachia infects the wasp Nasonia vitripennis, what happens?

A) The wasp dies immediately. B) Female wasps produce less offspring. C) Females wasps produce more offspring. D) Female wasps are unable to produce offspring.

Biology & Microbiology

Which of the following statements concerning Rocky Mountain spotted fever is correct?

A. The causative bacterium is transmitted by Ixodes ticks. B. Infections are seen in highest numbers in the Rocky Mountains. C. An infection rarely has complications beyond mild discomfort. D. Disease symptoms include fever, headache, and rash.

Biology & Microbiology

If the pH gradient in a two-dimensional gel is lost, which step during two-dimensional electrophoresis would be affected?

What will be an ideal response?

Biology & Microbiology