Cell Membrane Functions Quiz
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Questions and Answers

What is the main function of Leptin?

  • Inhibits bone maturation
  • Causes hunger
  • Causes you to feel full (correct)
  • Regulates blood sugar levels

    • Which hormone is responsible for upregulation of aquaporin channels within the collecting ducts?

  • ADH (correct)
  • Somatostatin
  • Ghrelin
  • Estradiol

    • What characteristic differentiates Steroid Hormones from Peptide Hormones?

  • Bind to extracellular receptors
  • Derived from cholesterol (correct)
  • Source from amino acids
  • Utilize second messengers

    • Which type of linkage is present in Cellulose?

    <p>Beta-1,4 linkage</p> Signup and view all the answers

    What happens when TSH is suppressed?

    <p>Increase in ACTH levels</p> Signup and view all the answers

    What is responsible for the specificity of receptors?

    <p>G-protein linked receptors</p> Signup and view all the answers

    Which hormone types are involved in blood calcium regulation?

    <p>Parathyroid Hormone (PTH) and Calcitonin</p> Signup and view all the answers

    What is the function of Vitamin D in the body?

    <p>Increasing blood calcium levels</p> Signup and view all the answers

    Which stop codon is responsible for terminating translation?

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

    Which enzyme is responsible for proofreading DNA sequences during replication?

    <p>DNA Polymerase</p> Signup and view all the answers

    What is the process called when a carbohydrate group is covalently attached to a protein?

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

    Which structure is responsible for producing oocytes and secreting hormones?

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

    What occurs in the process of DNA methylation?

    <p>Repression of transcription through addition of methyl group to DNA</p> Signup and view all the answers

    Which tube is the location of fertilization?

    <p>Uterine (fallopian) tube</p> Signup and view all the answers

    What is the process called when a phosphate group is covalently attached to a protein?

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

    What type of receptors respond to mechanical forces, vibrations, and pressure changes?

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

    Which type of scan reveals images of anatomy?

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

    Which of the following is a Ca2+ dependent transmembrane glycoprotein that mediates cell-cell adhesion?

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

    What is the function of Gap junctions?

    <p>Allow for rapid exchange of ions and small molecules</p> Signup and view all the answers

    Which sensory receptors respond to light and are found in the retina of the eye?

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

    What is the primary function of primase in DNA replication?

    <p>Making an RNA primer to match a fragment of DNA</p> Signup and view all the answers

    Which reflex involves spreading and lifting of a baby's toes when the sole is stimulated?

    <p>Babinski reflex</p> Signup and view all the answers

    What type of junction prevents the leakage of small molecules and ions between adjacent epithelial cells?

    <p>Tight junctions</p> Signup and view all the answers

    If a baby exhibits the Moro reflex, what physical response would you expect to see?

    <p>Extension and drawing in of the arms and legs, throwing back of the head</p> Signup and view all the answers

    What is the main role of ligases in DNA replication?

    <p>Binding two DNA fragments with phosphodiester bonds</p> Signup and view all the answers

    What is the role of Sulfolipids?

    <p>Playing a role in photosynthesis</p> Signup and view all the answers

    Which process describes vertical diffusion in the cell membrane?

    <p>Movement of molecules from one leaflet to another</p> Signup and view all the answers

    What is the energy requirement for scramblases to move phospholipids in the cell membrane?

    <p>ATP-independent</p> Signup and view all the answers

    Where are gustatory chemoreceptors located?

    <p>Taste buds on the tongue</p> Signup and view all the answers

    Which receptors detect stimuli from internal organs and blood vessels?

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

    Which type of mutation involves flipping a chromosomal segment?

    <p>Inversion Mutation</p> Signup and view all the answers

    What is the function of Goblet cells in the respiratory tract?

    <p>Produce mucus</p> Signup and view all the answers

    Which type of epithelial cells produce surfactant in the lungs?

    <p>Pneumocytes II</p> Signup and view all the answers

    What is the main function of axons in neurons?

    <p>Direct impulse</p> Signup and view all the answers

    Which mutation results from the insertion or deletion of bases that shifts the reading frame?

    <p>Frameshift Mutation</p> Signup and view all the answers

    What is the role of Myelin Sheath around axons?

    <p>Insulates nerve signals</p> Signup and view all the answers

    Which type of mutation tends to accumulate in species during evolution by natural selection?

    <p>Beneficial Mutation</p> Signup and view all the answers

    'Dendrites' in neurons function to:

    <p>Receive action potentials</p> Signup and view all the answers

    'Translocation' in genetics refers to the movement of a chromosomal segment to:

    <p>'Another chromosome'</p> Signup and view all the answers

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