Which of the Following Body Systems Rids the Body of Metabolic

question 24

Multiple Choice

Which of the following body systems rids the body of metabolic wastes and helps regulate the fluid balance and pH of the blood?

• A) cardiovascular
• B) muscular
• C) lymphatic
• D) urinary
• E) endocrine

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Definitions:

Lac Operon

A regulatory mechanism in bacteria that controls the expression of enzymes involved in lactose metabolism.

Repressor

A protein that binds to specific DNA sequences, preventing the transcription of genetic information from DNA to mRNA.

Acetyl Groups

Organic functional groups consisting of a methyl group single-bonded to a carbonyl. The formula is CH3CO-, significant in metabolic processes.

Histones

Proteins that package and order the DNA into structural units called nucleosomes, playing a critical role in gene regulation.