Bioanalysis: Carbohydrate Polymers and Lipids
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Questions and Answers

What percentage of total dry mass in cells are proteins?

  • 50% (correct)
  • 90%
  • 20%
  • 70%

Approximately how many different proteins are estimated to be in the human body?

  • 100,000 (correct)
  • 50,000
  • 10,000
  • 200,000

What is the main function of insoluble carbohydrate polymers in cells?

  • Cell signaling
  • Energy storage
  • Cell division
  • Structural and protective elements (correct)

What is the estimated amount of CO2 and H2O converted into cellulose and other plant products through photosynthesis each year?

<p>100 billion metric tons (B)</p> Signup and view all the answers

What is the main function of certain carbohydrate polymers in animals?

<p>Lubrication of skeletal joints (D)</p> Signup and view all the answers

What is the primary function of carbohydrate polymers attached to proteins or lipids?

<p>To determine the intracellular location or metabolic fate of glycoconjugates (C)</p> Signup and view all the answers

Which of the following is NOT a type of lipid?

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

What is a common challenge when extracting RNA from biological samples?

<p>RNA is less stable and more difficult to extract intact (B)</p> Signup and view all the answers

What is the term for complex molecules composed of carbohydrates attached to proteins or lipids?

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

What is the primary component of the lipophilic fraction of a biological sample?

<p>Fats, including triglycerides and fatty acids (A)</p> Signup and view all the answers

What are the elements essential to animal life and health?

<p>Bulk elements and Trace elements (A)</p> Signup and view all the answers

Which of the following biomolecules is NOT a class of macromolecules?

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

What is the primary function of trace elements in biological systems?

<p>Essential for the function of specific proteins, including enzymes (B)</p> Signup and view all the answers

Which of the following biomolecules is an example of a bioconjugate?

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

What is the term for the combination of biomolecules with other molecules?

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

What is the molecular weight of the compounds that are polymerized to form macromolecules?

<p>500 Da or less (B)</p> Signup and view all the answers

What is the type of bond that links amino acids in a polypeptide?

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

What is the term for the assembly of macromolecules into functional units?

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

What is the term for polymers of amino acids?

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

What type of biological samples can contain small molecules?

<p>Gaseous, liquid, or solid samples (D)</p> Signup and view all the answers

What is the term for polymers of high molecular weight assembled from monomers?

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

What is the first step in a metabolomics workflow?

<p>Rapid stopping of metabolism and extraction of the metabolites (A)</p> Signup and view all the answers

What type of samples may include solid samples after dissolution?

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

What is the term for the study of small molecules or metabolites within a given biological sample?

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

What type of biological samples are highly metabolically active?

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

What is a characteristic of proteins?

<p>They have a high molecular mass expressed in kDa (A)</p> Signup and view all the answers

What is an example of a bioconjugate?

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

What is a characteristic of lipids?

<p>They are defined as organic molecules soluble in chloroform (D)</p> Signup and view all the answers

What is the building block of polysaccharides?

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

What is the common feature of amphiphilic lipids?

<p>They have a dual nature with hydrophilic and lipophilic parts (D)</p> Signup and view all the answers

What percentage of the hemoglobin molecule is composed of iron ions?

<p>0.3% (A)</p> Signup and view all the answers

What is a characteristic of biomolecules derived from hydrocarbons?

<p>They are composed of carbon with a variety of functional groups (A)</p> Signup and view all the answers

What is the name of the biomolecule that carries acetyl groups in some enzymatic reactions?

<p>Acetyl-CoA (A)</p> Signup and view all the answers

What is the term for a class of biomolecules that includes carbohydrates, lipids, proteins, and nucleic acids?

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

What is a characteristic of functional groups in biomolecules?

<p>They have different chemical characteristics and reactions (A)</p> Signup and view all the answers

What is a biomolecule that contains two or more different kinds of functional groups?

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

What is the term for biomolecules that are composed of carbon with a variety of functional groups?

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

What is an example of a functional group?

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

What determines the physical-chemical properties of a biomolecule?

<p>The chemistry of its functional groups and their disposition in three-dimensional space (D)</p> Signup and view all the answers

How many iron ions are present in the hemoglobin molecule?

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

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