For Which Substance Would the Particle Density Equal the Bulk

question 21

Multiple Choice

For which substance would the particle density equal the bulk density?

• A)an organic soil
• B)a wet soil
• C)a quartz pebble
• D)a soil clod
• E)a well-aggregated surface soil

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Definitions:

Transcription Factor

A protein that regulates gene expression by binding to specific DNA sequences, thus controlling the transfer of genetic information from DNA to mRNA.

RNA Polymerase

An enzyme responsible for transcribing RNA from a DNA template, playing a vital role in gene expression.

MicroRNA

Small non-coding RNA molecules involved in gene regulation by interfering with the translation of mRNA into proteins.

Cytoplasm

The gel-like substance inside a cell, excluding the nucleus, containing organelles in which the cell's processes occur.