The Mass Number of an Element Is

question 46

Multiple Choice

The mass number of an element is:

• A) the number of neutrons in the atom.
• B) the number of protons in the atom.
• C) the sum of the number of protons plus the number of neutrons.
• D) the sum of the number of protons plus the number of electrons.
• E) the sum of the number of neutrons plus the number of electrons

---

Definitions:

Neural Tube Defects

A type of birth defect of the brain, spine, or spinal cord that occurs when the neural tube does not close completely.

Sex Chromosome

The chromosomes that determine the sex of an organism, typically represented as XX for females and XY for males in humans.

Neural Tube Defects

Neural tube defects are birth defects of the brain, spine, or spinal cord that occur when the neural tube does not close completely during early fetal development.

Spina Bifida

A neural tube defect that causes abnormalities of the brain and spine.