Lecture 2 BIOA11
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Questions and Answers

Which property of water allows it to dissolve salts and other polar molecules?

  • Water's cohesive nature
  • Water's ability to moderate temperature
  • Water's polar structure (correct)
  • Water's nonpolar structure

    • What is the main source of energy in living organisms?

  • Proteins
  • Carbohydrates (correct)
  • Nucleic acids
  • Lipids

    • Which type of biological macromolecule is composed mostly of carbon and hydrogen and is hydrophobic?

  • Carbohydrates
  • Nucleic acids
  • Lipids (correct)
  • Proteins

    • What are the monomer subunits of proteins?

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

    Which type of lipid is a component of cell membranes?

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

    What is the function of nucleic acids?

    <p>Store genetic information</p> Signup and view all the answers

    Which nitrogenous base pairs with adenine in DNA?

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

    What is the smallest, basic unit of life?

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

    How many cells are there approximately in the human body?

    <p>100 trillion</p> Signup and view all the answers

    What are the characteristics of life?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is NOT a characteristic of life?

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

    What is the composition of a water molecule?

    <p>2 hydrogen atoms and 1 oxygen atom</p> Signup and view all the answers

    What is the definition of metabolism?

    <p>The ability to break down and use energy</p> Signup and view all the answers

    What is the main focus of the course 'BioA11 Introduction to the Biology of Humans'?

    <p>Understanding the characteristics of life</p> Signup and view all the answers

    What are the office hours of the instructor, Karen Williams?

    <p>Friday 16:00-16:30</p> Signup and view all the answers

    What is the aim for the week mentioned in the text?

    <p>To be individually competent at reading and evaluating scientific literature</p> Signup and view all the answers

    What are the elements?

    <p>Fundamental forms of matter</p> Signup and view all the answers

    What is the main focus of the lecture mentioned in the text?

    <p>Metabolism and disorders</p> Signup and view all the answers

    What is the main property of water mentioned in the text?

    <p>It is a polar molecule</p> Signup and view all the answers

    What is the weak attraction between water molecules called?

    <p>Hydrogen bonding</p> Signup and view all the answers

    Which type of cells contain genetic material in the nucleus and membrane-bound organelles?

    <p>Eukaryotic cells</p> Signup and view all the answers

    What is one way that viruses replicate?

    <p>By replicating within a host cell</p> Signup and view all the answers

    Are viruses considered to be alive or nonliving?

    <p>Neither alive nor nonliving</p> Signup and view all the answers

    What is the scientific basis for the Canada food guide recommendations?

    <p>Research on the effects of certain foods</p> Signup and view all the answers

    What is the main function of enzymes in metabolism?

    <p>To break down macromolecules</p> Signup and view all the answers

    What is the characteristic of life that involves maintaining a stable internal environment?

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

    What are the molecules important for metabolism?

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

    What is an example of an inborn error of metabolism that results in the accumulation of an intermediate substance?

    <p>Both Alkaptonuria (AKU) and Phenylketonuria (PKU)</p> Signup and view all the answers

    What is the evidence for the effects of a reduction of sugary drinks?

    <p>Research on the effects of certain foods</p> Signup and view all the answers

    How can we study metabolism and disorders?

    <p>All of the above</p> Signup and view all the answers

    Study Notes

    Water Properties

    • Water can dissolve salts and other polar molecules due to its polarity.

    Energy in Living Organisms

    • The main source of energy in living organisms is ATP (adenosine triphosphate).

    Biological Macromolecules

    • Lipids are composed mostly of carbon and hydrogen and are hydrophobic.

    Proteins

    • The monomer subunits of proteins are amino acids.

    Cell Membranes

    • Phospholipids are a component of cell membranes.

    Nucleic Acids

    • The function of nucleic acids is to store and transmit genetic information.
    • Adenine pairs with thymine in DNA.

    Cells

    • The smallest, basic unit of life is the cell.
    • There are approximately 37.2 trillion cells in the human body.

    Characteristics of Life

    • The characteristics of life include organization, metabolism, homeostasis, growth and development, reproduction, response to stimuli, and evolution.

    Metabolism

    • Metabolism is the sum of all chemical reactions that occur in an organism.
    • The main focus of the course 'BioA11 Introduction to the Biology of Humans' is human biology.

    Instructor and Course Details

    • The instructor's office hours are not specified.
    • The aim for the week is not specified.

    Elements

    • The elements are the basic building blocks of matter.

    Lecture Focus

    • The main focus of the lecture is human biology.

    Water Properties

    • Water's polarity is its main property mentioned in the text.
    • The weak attraction between water molecules is called hydrogen bonding.

    Cells and Viruses

    • Eukaryotic cells contain genetic material in the nucleus and membrane-bound organelles.
    • Viruses replicate by hijacking the host cell's machinery to produce more viruses.
    • Viruses are considered nonliving.

    Nutrition and Metabolism

    • The scientific basis for the Canada food guide recommendations is not specified.
    • Enzymes facilitate metabolic reactions.
    • The characteristic of life that involves maintaining a stable internal environment is homeostasis.
    • The molecules important for metabolism are carbohydrates, proteins, and fats.
    • An example of an inborn error of metabolism that results in the accumulation of an intermediate substance is phenylketonuria (PKU).
    • The evidence for the effects of a reduction of sugary drinks is not specified.
    • We can study metabolism and disorders through biochemical and molecular biology techniques.

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    Related Documents

    BioA11 Metabolism And Disorders Lecture Notes PDF

    Description

    Test your knowledge on metabolism and disorders with this quiz! Covering topics from Chapter 2 of the BioA11 course, this quiz will assess your understanding of the biology of humans. Get ready to demonstrate your competency in reading and interpreting information related to metabolism and its associated disorders.

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