Biology Chapter 4: Carbon Skeleton and Functional Groups
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Questions and Answers

Which monosaccharide is found in the disaccharide sucrose?

  • Glucose
  • Maltose
  • Galactose
  • Fructose (correct)

In which type of chain is cellulose composed?

  • Maltose chain
  • a-glucose chain
  • b-glucose chain (correct)
  • Galactose chain

What is the primary function of chitin in animals and fungi?

  • Carbon source
  • Building material for plant cell walls
  • Structural support (correct)
  • Energy resource

What gives a protein its 3-D shape, including folds and coils?

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

Which nucleic acid carries information from DNA to ribosomes?

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

What is the primary function of a metabolic intermediate?

<p>Participating in enzymatic reactions (C)</p> Signup and view all the answers

How do functional groups contribute to the properties and reactions of organic compounds?

<p>By influencing the chemical reactivity and polarity of the compound (D)</p> Signup and view all the answers

What is the significance of carbon chains varying in length and shape in organic molecules?

<p>It influences the molecular weight and structural diversity of the molecules (B)</p> Signup and view all the answers

What is the primary role of lipids in living organisms?

<p>Serving as a structural component in cell membranes (B)</p> Signup and view all the answers

What is a characteristic feature of nucleic acids that distinguishes them from other biological molecules?

<p>Their ability to store and transmit genetic information (D)</p> Signup and view all the answers

What is the main function of a carbohydrate in living organisms?

<p>Serving as a reserve energy source (C)</p> Signup and view all the answers

What is the primary function of cellulose in plant cell walls?

<p>To provide structural support and strength (B)</p> Signup and view all the answers

Which polysaccharide is primarily responsible for storing glucose in liver and muscle cells?

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

What is the main function of chitin in arthropods?

<p>Structural support in cell walls (A)</p> Signup and view all the answers

Which type of protein structure is characterized by a 3-D shape with folds and coils?

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

Which nucleic acid stores hereditary information in the form of double-stranded helix with Thymine bases?

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

What is the primary function of myoglobin protein in cells?

<p>Oxygen storage and transport (B)</p> Signup and view all the answers

What is the primary function of nucleotides in DNA and RNA?

<p>Encoding genetic information (D)</p> Signup and view all the answers

Which amino acid substitution in a protein causes sickle-cell disease?

<p>Glutamic acid to valine (D)</p> Signup and view all the answers

What type of bond forms between amino acids in a protein?

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

In which organelle is starch, a polysaccharide, primarily synthesized?

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

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