Item #2 on This Image of the Electrical Flow Within

question 15

Short Answer

Item #2 on this image of the electrical flow within the heart is the ____________.

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Definitions:

Sex Pili

Hair-like appendages on the surface of bacteria used to transfer genetic material between cells during conjugation.

Exogenous DNA

DNA that originates outside an organism and can be introduced through viruses, horizontal gene transfer, or genetic engineering.

Spiracles

Small openings on the surface of some animals, especially insects, used for breathing.

Oxygen

A chemical element with the symbol O and atomic number 8, essential for most life forms on Earth as it is a key component of the respiratory processes of most living cells.