Biology: Special Roles of Carbon and Water in the Body
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Questions and Answers

What property of carbon allows it to form long chains and branches in biological molecules?

  • Strong C-C bond
  • Bonding with Oxygen, Nitrogen, or Hydrogen
  • Being a basic building block of biological molecules
  • 4 valence shell electrons (correct)

What property of water allows it to move up xylem against gravity?

  • Universal solvent property
  • High boiling point
  • Maximum density at 4°C
  • Cohesive nature (correct)

Which property of water is responsible for its high specific heat capacity?

  • Cohesive nature
  • Universal solvent property
  • Polar molecule (correct)
  • Maximum density at 4°C

What role does water play in regulating body temperature?

<p>Good coolant – evaporating water removes a lot of heat energy from the organism (C)</p> Signup and view all the answers

Which property of carbon stabilizes its structure?

<p>Strong C-C bond (D)</p> Signup and view all the answers

How does carbon contribute to the formation of organic molecules?

<p>By bonding with Oxygen, Nitrogen, or Hydrogen (D)</p> Signup and view all the answers

Which organic compound molecules consist of carbon bonded with hydrogen and hydroxyl groups?

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

What is the source of energy for cells?

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

Which type of fatty acids have no double bonds between carbons and are saturated with hydrogens?

<p>Saturated fatty acids (D)</p> Signup and view all the answers

What is the function of cellulose in plants?

<p>Structural component (D)</p> Signup and view all the answers

What is the function of triglycerides in animals?

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

Which compound acts as an energy source, transport molecule, and structural component?

<p>Glucose (D)</p> Signup and view all the answers

What is the function of phospholipids in plasma membranes?

<p>Structural component (D)</p> Signup and view all the answers

What is the primary function of disaccharides?

<p>Fast release for respiration (D)</p> Signup and view all the answers

What is the main function of amphipathic molecules?

<p>Have two distinct parts; hydrophilic and hydrophobic (B)</p> Signup and view all the answers

What is the primary function of carbohydrates?

<p>Acting as an energy source and transport molecules (A)</p> Signup and view all the answers

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