Methods Used to Remove or Destroy Viruses from Drinking Water

question 15

Multiple Choice

Methods used to remove or destroy viruses from drinking water include

• A)coagulation and filtration.
• B)chemical oxidation and high pH.
• C)photooxidation.
• D)All of these choices are correct.

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Definitions:

Crossing-Over

A process in which genetic material (DNA) is exchanged between paired, homologous chromosomes.

Haploid Gamete

A reproductive cell, such as a sperm or egg, that contains a single set of chromosomes and thus only one allele for genetic traits.

Prophase I

The first phase of meiosis I, where chromosomes condense, pair up, and exchange segments in a process called crossing-over.

Tetrads

Groups of four chromatids formed by the pairing of two homologous chromosomes during meiosis.