Lipids
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13 QuestionsShow answers
  • Question 1
    120 seconds
    Q. Carbon chains are principal features of both carbohydrates and lipids.  What is the primary difference between these two types of macromolecules?
    answer choices
    Lipids always have longer carbon chains than carbohydrates.
    Carbohydrates cannot form rings like lipids can.
    Lipids provide energy, but carbohydrates cannot.
    Carbohydrates form ring structures, lipids form long chains
  • Question 2
    60 seconds
    Q. Which biomolecule is often stored in the body's tissues as energy?
    answer choices
    proteins
    carbohydrates
    lipids
    nucleic acids
  • Question 3
    120 seconds
    Q. Which of the following molecules make up the basic structure of a cell membrane?
    answer choices
    waxes
    steroids
    fatty acids
    phospholipids
  • Question 4
    120 seconds
    Q. What are different examples of lipids?
    answer choices
    monosaccahrides, disaccharides, starch, cellulose
    dipetide, polypeptide, amino acids
    DNA, RNA, ATP
    triglycerides, waxes, steroids, phospholipds
  • Question 5
    120 seconds
    Q. Saturated fats are __________ at room temperature.
    answer choices
    liquid
    gases
    plasma
    solid
  • Question 6
    120 seconds
    Q. Which macromolecule is this?
    answer choices
    carbohydrate
    lipid
    protein
    nucleic acid
  • Question 7
    120 seconds
    Q. Which of the following is a lipid?
    answer choices
    cholesterol
    cellulose
    glucose
    protein
  • Question 8
    120 seconds
    Q. The characteristic that all lipids have in common is----
    answer choices
    made of lots of double bonds
    acidic when mixed with water
    no high energy content
    do not dissolve in water
  • Question 9
    30 seconds
    Q. Unsaturated fats are __________ at room temperature.
    answer choices
    liquids
    solids
    toxic
    saturated
  • Question 10
    60 seconds
    Q. What creates a steroid?
    answer choices
    4-fused carbon rings
    3-fused hydrogen chains
    2-fused oxygen molecules
    1 carboxyl group
  • Question 11
    60 seconds
    Q. Which of the following is a characteristic of lipids?
    answer choices
    They are polar molecules.
    They are nonpolar molecules.
    They dissolve in water.
    They are hydrophilic.
  • Question 12
    30 seconds
    Q. Part of a phospholipid molecule can mix with water, but the other part cannot. This means the molecule is
    answer choices
    hydrophbic
    hydrophilic
    amphipathic
    amphibian
  • Question 13
    30 seconds
    Q.

    A researcher placed a sample of purified lipid in a test tube containing water. She observed the formation of spherical micelle structures in the solution. Ultrastructural analysis of the micelles showed a light outer shell and a denser inner core.


    The researcher hypothesizes that the lipid micelles are held together by non-covalent interactions. She tests this hypothesis by vigorously agitating the solution. Which of these observations would provide the STRONGEST support for her hypothesis?

    answer choices

    The number of micelles decreases, and the size of the micelles decreases.

    The number of micelles increases, and the size of the micelles decreases.

    The number of micelles decreases, and the size of the micelles increases.

    The number of micelles increases, and the size of the micelles increases.

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