What Is a Significant Source of Water Pollution in Terms

question 98

Multiple Choice

What is a significant source of water pollution in terms of total mass? 

• A) fertilizer 
• B) water-soluble inorganic chemicals 
• C) oxygen-demanding waste 
• D) sediment

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Definitions:

Mismatch Repair Enzymes

A system within cells that repairs mispaired nucleotides which may arise during DNA replication and recombination, as well as repairing some forms of DNA damage.

DNA Polymerase

A catalyst that constructs DNA strands using deoxyribonucleotides as the foundational components of DNA.

DNA Ligase

Enzyme that catalyzes the joining of the 5′ and 3′ ends of two DNA fragments; essential in DNA replication and used in recombinant DNA technology.

Excision Repair Enzymes

A class of enzymes involved in the repair of DNA by recognizing and removing damaged or mismatched nucleotides, followed by filling in the correct sequences.