Cell Membrane Components Quiz
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Questions and Answers

Which type of enzymes move phospholipids in only a single direction in the cell membrane and are ATP dependent?

  • Fippases (correct)
  • Aquaporins
  • Floppases
  • Scramblases
  • What is the role of sulfolipids in biological systems?

  • Generate immune response
  • Facilitate photosynthesis (correct)
  • Facilitate lateral diffusion
  • Maintain cell membrane integrity
  • What is the primary function of Aquaporins in cell membranes?

  • Allow passive movement of water (correct)
  • Move phospholipids between leaflets
  • Respond to changes in blood pressure
  • Detect harmful stimuli
  • Which receptors are involved in detecting stimuli from internal organs and blood vessels?

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

    What is the primary function of Nociceptors in the body?

    <p>Detect harmful stimuli like high temperatures</p> Signup and view all the answers

    What is the main characteristic of Vertical diffusion in cell membranes?

    <p>Moves phospholipids between leaflets</p> Signup and view all the answers

    Which type of diffusion is described as energetically favorable and does not require energy input?

    <p>Lateral diffusion</p> Signup and view all the answers

    What is the primary function of Gustatory chemoreceptors?

    <p>Locate in taste buds and responsible for sense of taste</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

    What type of mutation involves flipping a chromosomal segment?

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

    What is the function of Axons in neurons?

    <p>Conduct impulses away from the cell body</p> Signup and view all the answers

    Which type of mutation results in a shift in the reading frame?

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

    What is the role of Myelin Sheath around axons?

    <p>Prevent signal loss by insulation</p> Signup and view all the answers

    Which type of cells produce surfactant in the lungs?

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

    What happens during the release of neurotransmitters?

    <p>NT binds to receptors on postsynaptic membrane</p> Signup and view all the answers

    What is the main function of Dendrites in neurons?

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

    What term describes random chance fluctuation due to explainable events, which leads to the fixation or loss of alleles contributing to genetic differences between populations?

    <p>Genetic drift</p> Signup and view all the answers

    Which evolutionary process occurs when distantly related organisms independently evolve similar traits to adapt to similar needs?

    <p>Convergent evolution</p> Signup and view all the answers

    In which type of selection do females purposefully choose to mate with males based on desirable appearances, even if these traits are not inherently beneficial?

    <p>Sexual selection</p> Signup and view all the answers

    What process refers to reversible genetic changes that do not alter the DNA sequence and are largely carried out through methylation and deacetylation?

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

    Which term describes the occurrence when the presence of two alleles for a gene results in a blended phenotype, such as gray fur?

    <p>Incomplete dominance</p> Signup and view all the answers

    In which type of selection do certain genes become more prevalent in a species over time?

    <p>Genetic selection</p> Signup and view all the answers

    What concept focuses on the idea that natural selection can act on groups of organisms rather than individual organisms?

    <p>Group selection</p> Signup and view all the answers

    Which type of selection favors traits that increase an organism's chances of attracting a mate and reproducing?

    <p>Sexual selection</p> Signup and view all the answers

    What is the Law of Dominance in genetics?

    <p>One form of a gene (allele) is dominant over the other in expressing a trait</p> Signup and view all the answers

    Where does spermatogenesis occur in the male reproductive system?

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

    What is the function of the Uterine (fallopian) tube in the female reproductive system?

    <p>Location of fertilization</p> Signup and view all the answers

    What does DNA methylation result in?

    <p>Repression of transcription</p> Signup and view all the answers

    What is the function of the Seminiferous tube in the male reproductive system?

    <p>Produce sperm and store it</p> Signup and view all the answers

    What happens during glycosylation of proteins?

    <p>Carbohydrate groups are attached to proteins</p> Signup and view all the answers

    What is the role of the Myometrium in the uterus?

    <p>Smooth muscle layer</p> Signup and view all the answers

    How do genes assort during meiosis according to Mendelian inheritance?

    <p>Independently</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 junctions allow for rapid exchange of ions and small molecules between cells?

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

    What do PET scans reveal information about?

    <p>Metabolic activity</p> Signup and view all the answers

    What is the role of ADH in body fluids such as blood?

    <p>Regulating thirst</p> Signup and view all the answers

    Which receptors are found in the eyes and respond to light?

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

    What is the function of desmosomes in cell-cell connections?

    <p>Serve to strengthen cell-cell connections by binding to adjacent cells' cytoskeleton</p> Signup and view all the answers

    What do CT scans reveal information about?

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

    'Ca2+ dependent transmembrane glycoproteins that mediate cell-cell adhesion by binding to cadherins on other cells' describes which of the following?

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

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