The Law of Constant Composition States

question 110

Multiple Choice

The law of constant composition states:

• A)Matter cannot be either created or destroyed in a chemical reaction.
• B)The nucleus is a dense region of positive charge that always contains protons and neutrons.
• C)All samples of a given compound have the same proportions of their constituent elements.
• D)All atoms of a given element have a constant composition and are different than atoms of any other element.
• E)none of the above

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Definitions:

Transcription Factor

A transcription factor is a protein that regulates the expression of a gene by binding to a specific DNA sequence in association with the gene sequence. A single transcription factor can regulate many genes if they share the same regulatory sequence.

Cis-regulatory Element

A region of non-coding DNA that regulates the transcription of nearby genes, playing a crucial role in controlling gene expression.

Olfactory Receptor

A type of protein located in the cell membranes of olfactory neurons, involved in the detection of smell molecules.

Gene Duplication

The process by which a segment of DNA is copied resulting in multiple copies of the same gene, contributing to genetic variation and evolution.