10 mL of a bacteriophage suspension is mixed with 5 mL of a bacterial culture and 25% of the phages adsorb. The bacteriophage suspension has a concentration of 4x1018 viruses per mL, and the bacterial culture had a concentration of 6x1014 bacteria per mL. How many viruses are adsorbed per cell (multiplicity of infection)?What fraction of the cells is uninfected?What fraction of the cells is single infected?What fraction of the cells is multiple infected?

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How many viruses are adsorbed per cell (multiplicity of infection)

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter13: Early Life Forms And The Viruses

Section: Chapter Questions

Problem 6SQ

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Concept explainers

Nutrient Growth Medium

It is a culture medium or nutrient broth for all kinds of microorganisms to grow properly and create their colony. This matrix provides support to increase the population of microbes through the method of cell proliferation. It is regarded as the food material for those organisms. It is a type of in vitro mechanism, in which the development of life is processed outside the host body. It can be solid, semi-solid, or liquid in nature. Different kinds of cells develop in different types of media.

Question

10 mL of a bacteriophage suspension is mixed with 5 mL of a bacterial culture and 25% of the phages adsorb. The bacteriophage suspension has a concentration of 4x10¹⁸ viruses per mL, and the bacterial culture had a concentration of 6x10¹⁴ bacteria per mL.

How many viruses are adsorbed per cell (multiplicity of infection)?
What fraction of the cells is uninfected?
What fraction of the cells is single infected?
What fraction of the cells is multiple infected?

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