Bio 1 Warm-up Quiz #6

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| By Christopher Mack
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Christopher Mack
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Bio 1 Warm-up Quiz #6 - Quiz


Questions and Answers
  • 1. 

    A student constructs several terrariums like the one shown. Each terrarium is exposed to a different amount of sunlight each day. In order to determine the ideal amount of sunlight, which of the following variables must be held constant?

    • A.

      Types of plants

    • B.

      Wavelengths of light

    • C.

      Growth rate of plants

    • D.

      Amount of sunlight

    Correct Answer
    A. Types of plants
    Explanation
    To determine the ideal amount of sunlight for the terrariums, the variable of "types of plants" must be held constant. This is because different types of plants have varying sunlight requirements and tolerances. By keeping the types of plants consistent across the terrariums, any differences in growth or health can be attributed to the varying amounts of sunlight, allowing for a more accurate determination of the ideal amount.

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  • 2. 

    Bacteria adapt more quickly to environmental changes than elephants. Which best explains this difference?

    • A.

      Individual bacteria have more genes

    • B.

      Bacteria reproduce more rapidly

    • C.

      Individual bacteria grow more steadily

    • D.

      Bacterial populations are more isolated

    Correct Answer
    B. Bacteria reproduce more rapidly
    Explanation
    Bacteria reproduce more rapidly, which allows them to adapt more quickly to environmental changes. This is because their short generation time allows for more frequent mutations and genetic variations, increasing the chances of beneficial traits emerging and being passed on to the next generation. In contrast, elephants have longer generation times, limiting the rate at which they can adapt to environmental changes.

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  • 3. 

    The structures labeled B are called ___.

    • A.

      Glycerides

    • B.

      Fatty acids

    • C.

      Amino acids

    • D.

      Phosphate groups

    Correct Answer
    B. Fatty acids
    Explanation
    The structures labeled B are called fatty acids. Fatty acids are long chains of carbon atoms with a carboxyl group at one end. They are an important component of lipids, such as triglycerides, and play a crucial role in energy storage and metabolism in organisms.

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  • 4. 

    The ___ form of this molecule is found in animals and is ___ at room temperature.

    • A.

      Saturated… solid

    • B.

      Unsaturated… liquid

    • C.

      Unsaturated… solid

    • D.

      Saturated… liquid

    Correct Answer
    A. Saturated… solid
    Explanation
    The correct answer is saturated... solid. In organic chemistry, molecules can be classified as saturated or unsaturated based on the presence or absence of double or triple bonds between carbon atoms. A saturated molecule contains only single bonds and is typically solid at room temperature. Unsaturated molecules, on the other hand, contain double or triple bonds and are usually liquid at room temperature. Therefore, the saturated form of this molecule is found in animals and is solid at room temperature.

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  • 5. 

    If you ate bacon and fried eggs for breakfast, the largest component of the energy would come from the ___.

    • A.

      Carbohydrates

    • B.

      Proteins

    • C.

      Sugars

    • D.

      Lipids

    Correct Answer
    D. Lipids
    Explanation
    If you ate bacon and fried eggs for breakfast, the largest component of the energy would come from lipids. Lipids are a type of fat found in foods like bacon and eggs. They are a concentrated source of energy, containing more than twice as many calories per gram as carbohydrates or proteins. Therefore, consuming lipids in the form of bacon and eggs would provide the most energy.

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  • 6. 

    Organic compounds ALL contain the element carbon. Which organic compound, used for stored chemical energy, contains carbon, hydrogen, oxygen, and often phosphorous?

    • A.

      Carbohydrates

    • B.

      Lipids

    • C.

      Sugars

    • D.

      Proteins

    Correct Answer
    B. Lipids
    Explanation
    Lipids are organic compounds that contain carbon, hydrogen, and oxygen, and often phosphorous. They are used for stored chemical energy in the body. Carbohydrates also contain carbon, hydrogen, and oxygen, but they do not typically contain phosphorous. Sugars are a type of carbohydrate and do not contain phosphorous either. Proteins contain carbon, hydrogen, oxygen, and nitrogen, but they do not typically contain phosphorous. Therefore, lipids are the only organic compound listed that meets all the criteria mentioned in the question.

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  • 7. 

    Water (H2O) is an example of a molecule whose atoms are held together by which of the following?

    • A.

      Hydrogen bonds

    • B.

      Covalent bonds

    • C.

      Ionic bonds

    • D.

      Metallic bonds

    Correct Answer
    B. Covalent bonds
    Explanation
    Water (H2O) is an example of a molecule whose atoms are held together by covalent bonds. Covalent bonds occur when atoms share electrons to achieve a stable electron configuration. In the case of water, the oxygen atom and the two hydrogen atoms share electrons, resulting in a stable molecule. This sharing of electrons creates a strong bond between the atoms, holding them together in the water molecule.

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  • 8. 

    The specific chemical that an enzyme will act on is called a(n)___.

    • A.

      Protein

    • B.

      Catalyst

    • C.

      Substrate

    • D.

      Amino acid

    Correct Answer
    C. Substrate
    Explanation
    An enzyme is a type of protein that acts as a catalyst in chemical reactions. The specific chemical that an enzyme acts on is called a substrate. Enzymes bind to substrates and help to facilitate the reaction, increasing the rate at which it occurs. Therefore, the correct answer is substrate.

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  • 9. 

    A bond that is formed when two atoms share electrons is called a ___.

    • A.

      Covalent bond

    • B.

      Ionic bond

    • C.

      Hydrogen bond

    • D.

      James bond

    Correct Answer
    A. Covalent bond
    Explanation
    A covalent bond is formed when two atoms share electrons. In this type of bond, the electrons are shared between the atoms, creating a strong bond that holds the atoms together. This type of bonding is commonly found in molecules and compounds made up of nonmetals. Ionic bonds involve the transfer of electrons from one atom to another, hydrogen bonds are weaker bonds formed between a hydrogen atom and an electronegative atom, and James bond is not a scientific term related to chemical bonding.

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  • 10. 

    The picture at the right is an example of a(n) ___.

    • A.

      Bonding model

    • B.

      Super model

    • C.

      Atomic model

    • D.

      Molecular model

    Correct Answer
    C. Atomic model
    Explanation
    The picture at the right is an example of an atomic model because it represents the structure of an atom. Atomic models are used to visually represent the arrangement of protons, neutrons, and electrons within an atom. These models help scientists understand and study the behavior and properties of different elements.

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  • Current Version
  • Apr 22, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 07, 2013
    Quiz Created by
    Christopher Mack
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