COVID-19 Spike Protein and ACE2 Receptors Quiz
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Questions and Answers

Which type of membrane protein provides an opening for molecules to pass through by changing shape?

  • Structural membrane protein
  • Carrier membrane protein (correct)
  • Channel membrane protein
  • Receptor membrane protein

    • What is the main function of ACE2 receptors in human nasal cavities?

  • Indirectly manage inflammation (correct)
  • Facilitate cellular growth
  • Act as a protective barrier against viruses
  • Regulate blood pressure

    • Why is the ECM (Extracellular Matrix) considered mysterious in research?

  • Cells cannot grow in vitro without it
  • It has unknown origins
  • It plays a crucial role in cellular growth
  • Its function is not fully understood (correct)

    • Which part of the virus cells does the orange spikes protein belong to?

    <p>Upper part</p> Signup and view all the answers

    What would happen if the gene for ACE2 production was removed or knocked out?

    <p>Impaired blood pressure regulation and inflammation management</p> Signup and view all the answers

    What is the main role of intercellular joining of cells?

    <p>Connect to other cells in the neighborhood</p> Signup and view all the answers

    What is the correct term for the sections in the DNA that are responsible for coding proteins?

    <p>Codons</p> Signup and view all the answers

    Why is mRNA considered 'coding'?

    <p>It contains the same genetic information as DNA but with uracil instead of thymine.</p> Signup and view all the answers

    What gives water its temperature stabilizing capacity?

    <p>High Specific Heat Capacity</p> Signup and view all the answers

    Why does the color from the stem with flowers rise when immersed in colored dye?

    <p>Due to hydrogen bonds</p> Signup and view all the answers

    Which molecule guides the translation process in protein synthesis?

    <p>rRNA</p> Signup and view all the answers

    What is the specific heat of water?

    <p>1.0 calorie per gram</p> Signup and view all the answers

    What mutation is responsible for sickle cell anemia?

    <p>Single point mutation changing CTT to CAT</p> Signup and view all the answers

    In the primary structure of a protein, what allows amino acids to communicate and interact with each other?

    <p>Forces of attraction based on amino acid properties</p> Signup and view all the answers

    How do hydrogen bonds contribute to the cohesiveness of water?

    <p>By forming an extensive network of H-bonded molecules</p> Signup and view all the answers

    What would happen to planetary temperature if water did not have a high specific heat capacity?

    <p>Rapid temperature changes causing climate instability</p> Signup and view all the answers

    What determines the wide range of functions that proteins can carry out?

    <p>The arrangement of amino acids in the protein sequence</p> Signup and view all the answers

    Why does the upper layer of sweat on skin have high heat energy?

    <p>It is the warmer layer</p> Signup and view all the answers

    What type of interactions involves weak attractions between two atoms that only occur if the atoms are very close to one another and oriented appropriately?

    <p>Van der Waals Interactions</p> Signup and view all the answers

    What is the function of HSP70 in cells experiencing elevated temperatures?

    <p>To protect cells by acting as a chaperone protein</p> Signup and view all the answers

    What do hydrophobic interactions describe in macromolecules?

    <p>Association of nonpolar groups to minimize contact with water</p> Signup and view all the answers

    How do chaperone proteins like HSP70 contribute to cells under stress?

    <p>They help fold proteins correctly and prevent aggregation</p> Signup and view all the answers

    What causes huge problems for the tobacco industry mentioned in the text?

    <p>Self-assembly of tobacco mosaic virus particles</p> Signup and view all the answers

    Why do water droplets bead up on a newly waxed car when it rains?

    <p>Due to the hydrophobic nature of the car's surface.</p> Signup and view all the answers

    What type of bond is 2.1, as mentioned in the text?

    <p>Ionic bond</p> Signup and view all the answers

    How do water molecules exhibit capillary action?

    <p>By attracting other substances to rise against gravity in narrow spaces.</p> Signup and view all the answers

    Why does it take 8-10 minutes to boil water?

    <p>Due to the presence of hydrogen bonds that need to be broken.</p> Signup and view all the answers

    What property of water is responsible for its high boiling point?

    <p>Specific heat capacity</p> Signup and view all the answers

    How are water molecules attracted to each other according to the text?

    <p>Through hydrogen bonds due to polarity.</p> Signup and view all the answers

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