Imagine That You Have Been Hired as a Chemist and Your

question 43

Multiple Choice

Imagine that you have been hired as a chemist and your first task is to examine a newly discovered atom. The paperwork you are given states that its atomic number is 110. What does this mean?

• A) The atom contains 110 protons.
• B) The atom contains 55 electrons.
• C) The atom is an isotope.
• D) The atom contains 55 protons and 55 neutrons.

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Definitions:

Pneumonia

An infection that inflames air sacs in one or both lungs, which may become filled with fluid.

Portal Of Entry

The site through which pathogens enter the host body, initiating infection or disease.

MRSA

Methicillin-resistant Staphylococcus aureus, a type of bacteria that is resistant to many antibiotics, leading to difficult-to-treat infections.

Nasal Culture

A test that involves taking a sample from the inside of the nose to identify the presence of organisms that could cause infection.