Cell Membrane and Glucose Uptake Mechanism Quiz
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Questions and Answers

What happens to glucose concentration inside muscle cells when insulin is not available?

  • It increases
  • It is stored as fatty acids
  • It remains close to zero (correct)
  • It remains high
  • What is the primary function of muscle glycogen?

  • Used for short periods of extreme energy (correct)
  • Stored in the liver
  • Used for long-term energy storage
  • Converted to fatty acids
  • What does insulin do with glucose absorbed after a meal?

  • Stores it in muscle cells (correct)
  • Converts it to fatty acids
  • Releases it into the bloodstream
  • Breaks it down into lactic acid
  • What happens to liver glycogen when hypoglycemia appears?

    <p>Is split into glucose and released into the blood</p> Signup and view all the answers

    How does insulin affect the liver's use of glucose?

    <p>Stimulates storage of glucose as glycogen</p> Signup and view all the answers

    What effect does glucagon have on liver glycogen during hypoglycemia?

    <p>Stimulates conversion of glycogen to glucose</p> Signup and view all the answers

    What happens when insulin is not available in the body?

    <p>Vesicles carrying glucose transport proteins separate from the membrane</p> Signup and view all the answers

    Which of the following tissues show rapid uptake, storage, and use of glucose in response to insulin?

    <p>Adipose tissue</p> Signup and view all the answers

    What facilitates glucose uptake into cells by binding with the membrane?

    <p>Glucose transport proteins</p> Signup and view all the answers

    What is the main source of energy for muscles most of the day?

    <p>Fatty acids</p> Signup and view all the answers

    What is the primary effect of glucagon in the liver?

    <p>Causing glycogenolysis</p> Signup and view all the answers

    What effect does muscle contraction have on glucose transporter 4 (GLUT 4)?

    <p>Stimulates translocation to the cell membrane</p> Signup and view all the answers

    Which type of glucose transporter is insulin-dependent and involved in the uptake of glucose by muscle and adipose cells?

    <p>GLUT 4</p> Signup and view all the answers

    Which process leads to the storage and use of glucose by almost all tissues, especially muscles, adipose, and liver cells?

    <p>Insulin secretion</p> Signup and view all the answers

    What is the role of insulin in promoting glyconeogenesis and glycogenolysis?

    <p>Facilitating the use of new glucose in cells</p> Signup and view all the answers

    Where is GLUT 2 predominantly found among the following cells?

    <p>Pancreatic beta-cells</p> Signup and view all the answers

    Which hormone increases insulin secretion leading to glyconeogenesis and glycogenolysis?

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

    What is the function of GLUT 1 among the following?

    <p>Basal rate glucose uptake in all cells</p> Signup and view all the answers

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