Certain genes that allow for a certain thing to happen are turned on or turned off as needed. A brain cell may have the gene needed to send electrical pulses to other brain cells or other parts of the body, whereas a heart cell may have the genes that allow it to contract to pump blood. (I don't know if those are real genes, but hopefully you get the idea)
what chapter is it? and do you have a vocab sheet that goes with this?
<span>It Provides Energy to pump hydrogen atoms
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Ans 2. On a human body, dorsal refers to the back portion of the body.
Ans 3. On a human body, ventral refers to the front part of the body.
Ans 4. Anterior is the front of a structure, or a structure found toward the front of the body.
Ans 5. Situated at or toward the hind part of the body.
Ans 6. the upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth, and sense organs.
Ans 7.It separates the outer ear from the middle ear. When sound waves reach the tympanic membrane they cause it to vibrate. The vibrations are then transferred to the tiny bones in the middle ear. The middle ear bones then transfer the vibrating signals to the inner ear.
