What Is the Similarity Between MiRNAs, SiRNAs, and PiRNAs

question 66

Multiple Choice

What is the similarity between miRNAs, siRNAs, and piRNAs?

• A) All three types originate from transposons or viruses and are found in all organisms.
• B) They all target and degrade the gene from which they were transcribed.
• C) All three are generated from a single-stranded RNA that gets cleaved.
• D) All three can influence chromatin structure, which, in turn, can influence gene expression.
• E) All three associate with Piwi proteins in order to mediate RNA degradation.

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Definitions:

Marrow

A soft fatty substance in the cavities of bones, where blood cells are produced.

Periosteum

Fibrous connective tissue that covers the surface of a long bone; contains blood vessels that service the cells within the bone.

Ligaments

Strong, flexible bands of connective tissue that connect bones to other bones at joints.

Cartilage

A firm, flexible connective tissue found in various parts of the body, including the joints, rib cage, and ear.