Scientific Studies That Compare Patients with a Disease to Those

question 17

Multiple Choice

Scientific studies that compare patients with a disease to those without the disease are referred to as

• A) case-control studies.
• B) clinical trials.
• C) cohort studies.
• D) in vitro studies.

---

Definitions:

Oxidation Number

A value that represents the total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom.

Cl

Symbol for Chlorine, a reactive, yellow-green gas at room temperature, belonging to the halogen group in the periodic table, with applications in water purification, disinfectants, and bleach.

Elemental Metals

A group of elements that share properties such as high electrical conductivity, malleability, and a shiny appearance.

Redox Reaction

A type of chemical reaction that involves a transfer of electrons between two species.