What Is the Assigned Mass of the Reference Isotope for the Atomic

question 136

Multiple Choice

What is the assigned mass of the reference isotope for the atomic mass scale?

• A)1.01 amu
• B)4.00 amu
• C)12.01 amu
• D)16.00 amu
• E)12 amu exactly

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Definitions:

Moro Reflex

A neonatal startle response that occurs in reaction to a sudden, intense noise or movement. When startled, the newborn arches its back, throws its head back, and flings out its arms and legs. Then the newborn rapidly closes its arms and legs to the center of the body.

Babinski Reflex

A reflex seen in infants when the sole of the foot is stroked, resulting in upward movement of the big toe and fanning of the other toes.

Grasping Reflex

A neonatal reflex that occurs when something touches the infant’s palms. The infant responds by grasping tightly.

Rooting Reflex

A newborn’s built-in reaction that occurs when the infant’s cheek is stroked or the side of the mouth is touched. In response, the infant turns its head toward the side that was touched, in an apparent effort to find something to suck.