Which Elements Account for More Than 97% of the Weight

question 59

Multiple Choice

Which elements account for more than 97% of the weight of most organisms?

• A)C,H,N,Mg,O,S
• B)C,H,N,O,P,S
• C)C,H,N
• D)Fe,C,H,O,P
• E)Ca²+,K+,Na+,Mg²+,Cl-

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Definitions:

Antimicrobial Agent

A substance that kills or inhibits the growth of microorganisms, such as bacteria, viruses, or fungi.

Culture Medium

A nutrient-rich substance used to grow microorganisms, cells, or small plants in a controlled environment.

Attention Deficit Hyperactivity Disorder

A neurological disorder characterized by patterns of inattention, hyperactivity, and impulsivity that interfere with functioning or development.

Hyperactivity

An abnormal level of activity or energy, often manifesting as restlessness or difficulty remaining still or focused, commonly seen in disorders such as ADHD.