The Elements of Life

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How many different organic compounds are found in a single cell of the bacterium, Escherichia coli?

1,000

90

100,000

6,000 (correct)

Which elements constitute about 90% of the dry weight of the human body?

Calcium, potassium, sodium, chlorine, magnesium, iron, copper, cobalt, iodine, zinc, fluorine, molybdenum and selenium

Carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur, calcium, potassium, sodium, chlorine, magnesium, iron, copper, cobalt, iodine, zinc, fluorine, molybdenum and selenium

Carbon, hydrogen, oxygen, nitrogen, phosphorus and magnesium

Carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur (correct)

Which element is the most predominant and versatile element of life?

Hydrogen

Oxygen

Nitrogen

Carbon (correct)

What is the estimated number of different types of molecules that may be found in the human body?

<p>100,000</p> Signup and view all the answers

What is the unique property of carbon that allows it to form an infinite number of compounds?

<p>Ability to form stable covalent bonds and C-C chains of unlimited length</p> Signup and view all the answers

The Elements of Life

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Questions and Answers

How many different organic compounds are found in a single cell of the bacterium, Escherichia coli?

Which elements constitute about 90% of the dry weight of the human body?

Which element is the most predominant and versatile element of life?

What is the estimated number of different types of molecules that may be found in the human body?

What is the unique property of carbon that allows it to form an infinite number of compounds?

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