Carbon Element Basics
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Questions and Answers

How many protons and neutrons are there in the nucleus of a carbon atom?

  • Eight protons and eight neutrons
  • Six protons and six neutrons (correct)
  • Seven protons and seven neutrons
  • Five protons and five neutrons

What determines the chemical properties of an element?

  • The number of electrons (correct)
  • The number of protons
  • The atomic mass
  • The number of neutrons

Which gas is mainly responsible for climate change?

  • Argon
  • Carbon dioxide (correct)
  • Nitrogen
  • Oxygen

In what form does pure carbon mostly exist?

<p>Crystalline form (C)</p> Signup and view all the answers

What is the atomic number of carbon?

<p>6 (C)</p> Signup and view all the answers

What is the primary function of carbon in the body?

<p>Form key molecules within the body (C)</p> Signup and view all the answers

Which macronutrient provides a source of energy and also protects vital organs?

<p>Lipids (A)</p> Signup and view all the answers

Why are nucleic acids vitally important to animal life?

<p>They include DNA which contains instructions for development, survival, and reproduction (B)</p> Signup and view all the answers

What would be the consequence if humans did not have nucleic acids like DNA?

<p>Inability to reproduce (C)</p> Signup and view all the answers

Which macronutrient makes up most of the human body and plays a crucial role in building cells?

<p>Proteins (B)</p> Signup and view all the answers

What are the two allotropic forms of elemental carbon mentioned in the text?

<p>Diamonds and graphite (A)</p> Signup and view all the answers

Why is carbon considered essential to human survival according to the text?

<p>Because it is a major part of dry biomass in all living things (B)</p> Signup and view all the answers

What key molecules within the body are mentioned as being primarily composed of carbon?

<p>Nucleic acids and lipids (B)</p> Signup and view all the answers

Why do plants need carbon as per the text?

<p>For the process of photosynthesis (A)</p> Signup and view all the answers

What is the importance of the carbon cycle mentioned in the text?

<p>To maintain a stable climate and balance of carbon on Earth (A)</p> Signup and view all the answers

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