Understanding CHNOPS and Their Role in Biochemistry

What percentage of living matter on Earth is made up of CHNOPS elements?

• 97.9%

• 98%

• 96.2%

• 99.7%

Which element is known for forming the backbone of most biological molecules?

• Oxygen

• Nitrogen

• Carbon

• Hydrogen

What percentage of the human body is made up of Hydrogen?

• 18%

• 10%

• 65%

• 3%

Which element is a key component of DNA and is abundant in the air we breathe?

• Carbon

• Nitrogen

• Sulfur

• Oxygen

What is the primary role of Oxygen in biochemical reactions?

• Neural signaling

• Phosphorylation

• Oxidizing reactions

• Forming disulfide bridges

Which element is found in the backbone of DNA and is crucial for energy transfer in cells?

• Calcium

• Sulfur

• Phosphorus

• Iron

What is the role of Sulfur in proteins?

• Forms disulfide bridges

• Involved in oxidizing reactions

• Acts as an electrolyte

• Forms the backbone of DNA

What percentage of the human body is made up of Calcium?

• 1%

• 1.5%

• 3%

• 0.25%

Which trace element is essential for hemoglobin function?

• Potassium

• Iron

• Sodium

• Iodine

What is the primary function of Sodium and Potassium in the human body?

• Energy transfer

• Forming DNA backbone

• Acting as antioxidants

• Neural signaling