What is the minimum number of phage that can initiate the development of a plaque in a bacterial lawn?

A. 1
B. 5
C. 25
D. 10


Answer: A

Biology & Microbiology

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In the universal ABO blood grouping system, there are four phenotypes - A, B, AB, and O - which are determined by

three different alleles. The presence of three alleles in the ABO blood grouping system is an example of ____.

a. a polymorphism b. genetic drift c. the bottleneck effect d. a dimorphism e. the founder effect

Biology & Microbiology

The hormone __________ is indicated at “E.”

a. STH b. aldosterone c. oxytocin d. ADH e. none of these

Biology & Microbiology

Convex lenses can correct ________, also called farsightedness

Fill in the blank(s) with correct word

Biology & Microbiology

Which aquatic zone in a lake will have the highest nutrient levels and therefore the densest microbial populations?

A. the littoral zone B. the limnetic zone C. the profundal zone D. the benthic zone E. the sediment zone

Biology & Microbiology