The mass number represents the number of
A) protons in an atom.
B) electrons in an ion.
C) neutrons in an atom.
D) protons + neutrons.
E) neutrons + electrons.
Answer: D
You might also like to view...
Differentiation refers to the
A. formation and organization of the diverse cell types in the body. B. time when the blastocyst implants in the uterine wall. C. moment of conception (when sperm and egg unite). D. formation of the various organ systems in the body. E. separation of the placenta from the fetus at birth.
Appropriate strategies to lessen the likelihood of acquiring osteoporosis include which of the following?
A. adequate dietary calcium intake B. regular weight-bearing exercise C. both A and B D. none of the above
For which of the following organelles are the structure and function correctly described?
A) Ribosomes—membranous vesicles containing digestive enzymes B) Golgi apparatus—particles, composed of protein and RNA, which synthesize proteins C) Mitochondrion—nonmembranous structure that synthesizes proteins D) Endoplasmic reticulum—a network of interconnected membranes forming sacs and canals that packages protein molecules for secretion
Melatonin is secreted from the ____________________
Fill in the blank(s) with correct word