Some photosynthetic bacteria produce gas vacuoles that regulate their buoyancy but contain no lipid.

Answer the following statement true (T) or false (F)


True

Biology & Microbiology

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Which of the following white blood cells kills infected or cancerous body cells?

a. eosinophils b. B lymphocytes c. natural killer (NK) cells d. mast cells

Biology & Microbiology

Which group includes all of the other groups?

a. domain b. order c. family d. genus e. species

Biology & Microbiology

Due to a rapid change in the environment, a population of ants was reduced from 1 million to 1

thousand. What type of genetic drift will occur in the gene pool of this population when it expands again? a. the founder effect b. migration c. a genetic bottleneck d. gene flow e. natural selection

Biology & Microbiology

According to the animation, surgical infections account for what percentage of nosocomial infections?

A) 15% B) 40% C) 11% D) 8% E) 20%

Biology & Microbiology