Anatomy and Physiology 2e Chapter 2 – Review Questions, OpenStax Practice Questions with Concept Reinforcement

Ch. 2 Review Questions - Anatomy and
Physiology 2e | OpenStax
Review Questions
4
.
Together, just four elements make up more than 95 percent of the body’s mass. These
include ________.
1.​ calcium, magnesium, iron, and carbon
2.​ oxygen, calcium, iron, and nitrogen
3.​ sodium, chlorine, carbon, and hydrogen
4.​ oxygen, carbon, hydrogen, and nitrogen

5
.
The smallest unit of an element that still retains the distinctive behavior of that element
is an ________.
1.​ electron
2.​ atom
3.​ elemental particle
4.​ isotope

6
.
The characteristic that gives an element its distinctive properties is its number of
________.
1.​ protons
2.​ neutrons
3.​ electrons
4.​ atoms

7
.

, On the periodic table of the elements, mercury (Hg) has an atomic number of 80 and a
mass number of 200.59. It has seven stable isotopes. The most abundant of these
probably have ________.
1.​ about 80 neutrons each
2.​ fewer than 80 neutrons each
3.​ more than 80 neutrons each
4.​ more electrons than neutrons

8
.
Nitrogen has an atomic number of seven. How many electron shells does it likely have?
1.​ one
2.​ two
3.​ three
4.​ four

9
.
Which of the following is a molecule, but not a compound?
1.​ H2O
2.​ 2H
3.​ H2
4.​ H+

10
.
A molecule of ammonia contains one atom of nitrogen and three atoms of hydrogen.
These are linked with ________.
1.​ ionic bonds
2.​ nonpolar covalent bonds
3.​ polar covalent bonds
4.​ hydrogen bonds

11
.
When an atom donates an electron to another atom, it becomes
1.​ an ion