The Chemical Bonds That Are Formed When Atoms Share Electrons

question 35

Multiple Choice

The chemical bonds that are formed when atoms share electrons equally are called ____.

• A) polar covalent bonds
• B) van der Waals forces
• C) ionic bonds
• D) hydrogen bonds
• E) nonpolar covalent bonds

---

Definitions:

Tunica Media

The middle layer of the wall of a blood vessel or hollow organ, consisting primarily of smooth muscle cells and elastic fibers.

Pulmonary Circulation

The passage of blood from the heart to the lungs and back to the heart, where it is oxygenated and rid of carbon dioxide.

Pulmonary Arteries

The arteries that carry deoxygenated blood from the heart to the lungs, where it is oxygenated before being returned to the heart.

Lungs

Organs in the respiratory system involved in the exchange of oxygen and carbon dioxide between the body and the environment.