Chemistry Of Life - Quiz 3

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| By Akimamarshall
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Akimamarshall
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Quizzes Created: 3 | Total Attempts: 11,302
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  • 1/8 Questions

    Nucleotides are the building blocks of

    • Fats
    • Sugars and starches
    • DNA and RNA
    • Carbohydrates
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About This Quiz

This quiz concentrates on the 4 macromolecules - carbohydrates, proteins, lipids , and nucleic acides.

Chemistry Of Life - Quiz 3 - Quiz

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  • 2. 

    Examples of carbohydrates include:

    • Fats

    • Sugars and starches

    • Nucleic acids

    • Monomers

    Correct Answer
    A. Sugars and starches
    Explanation
    Carbohydrates are organic compounds made up of carbon, hydrogen, and oxygen atoms. They are an essential source of energy for the body. Sugars and starches are examples of carbohydrates as they are composed of simple sugar molecules or chains of sugar molecules respectively. Fats are not considered carbohydrates as they are composed of glycerol and fatty acids. Nucleic acids are also not carbohydrates as they are made up of nucleotide monomers.

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  • 3. 
    (from www.md12.org)Some adult insects are unable to swim but are able to walk on top of water. What characteristic of water enables these insects to walk on top of water? - ProProfs

    (from www.md12.org)Some adult insects are unable to swim but are able to walk on top of water. What characteristic of water enables these insects to walk on top of water?

    • Surface tension

    • PH

    • Solvent properties

    • Atomic bonds

    Correct Answer
    A. Surface tension
    Explanation
    Surface tension is the characteristic of water that enables insects to walk on top of it. Surface tension is the result of cohesive forces between water molecules, causing them to stick together and form a "skin" on the surface. This creates a strong surface that can support the weight of small insects, allowing them to walk on water without sinking.

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  • 4. 
    Carbohydrates are a _______ energy source for the body. - ProProfs

    Carbohydrates are a _______ energy source for the body.

    • Only

    • Tertiary

    • Secondary

    • Primary

    Correct Answer
    A. Primary
    Explanation
    Carbohydrates are the primary energy source for the body because they are easily broken down into glucose, which is used by cells to produce ATP, the energy currency of the body. Carbohydrates provide quick and readily available energy, making them essential for normal bodily functions and physical activity. Other macronutrients like fats and proteins can also be used for energy, but carbohydrates are the body's preferred and most efficient source.

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  • 5. 
    Fats are a ______ energy source for the body. - ProProfs

    Fats are a ______ energy source for the body.

    • Only

    • Tertiary

    • Secondary

    • Primary

    Correct Answer
    A. Secondary
    Explanation
    Fats are considered a secondary energy source for the body. While carbohydrates are the primary source of energy, the body turns to fats when carbohydrate stores are depleted. Fats are broken down into fatty acids and used as fuel by the body, providing a longer-lasting and more sustained energy source compared to carbohydrates. This makes fats an important energy source during prolonged physical activity or when there is a lack of immediate carbohydrate availability.

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  • 6. 
    (from www.mdk12.org)Use the information and the drawing below to answer the following item. The pitcher plant is a carnivorous plant that consumes various small organisms such as spiders and frogs. The pitcher plant is often found in areas with soil that is very acidic and contains few nutrients. The pitcher plant consumes organisms that help supply the plant with nutrients that are not in the soil. A diagram of the pitcher plant is shown below.In which soil pH range are pitcher plants most likely found? - ProProfs

    (from www.mdk12.org)Use the information and the drawing below to answer the following item. The pitcher plant is a carnivorous plant that consumes various small organisms such as spiders and frogs. The pitcher plant is often found in areas with soil that is very acidic and contains few nutrients. The pitcher plant consumes organisms that help supply the plant with nutrients that are not in the soil. A diagram of the pitcher plant is shown below.In which soil pH range are pitcher plants most likely found?

    • 4.5-5.5

    • 7-8

    • 10.5-11.5

    • 13-14

    Correct Answer
    A. 4.5-5.5
    Explanation
    Pitcher plants are most likely found in soil with a pH range of 4.5-5.5. This is because the pitcher plant requires soil that is very acidic and contains few nutrients. The low pH of the soil helps the pitcher plant to thrive and obtain the necessary nutrients from the organisms it consumes.

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  • 7. 
    (from www.mdk12.org)Use the diagram below to answer the following item. Which of these is a nucleotide? - ProProfs

    (from www.mdk12.org)Use the diagram below to answer the following item. Which of these is a nucleotide?

    • 1

    • 2

    • 3

    • 4

    Correct Answer
    A. 4
    Explanation
    A nucleotide is a building block of DNA and RNA, consisting of a nitrogenous base, a sugar molecule, and a phosphate group. In the given diagram, option 4 is a nucleotide as it shows all three components - a nitrogenous base (represented by the letter "A"), a sugar molecule (represented by the pentagon shape), and a phosphate group (represented by the circle with a "P" inside it).

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  • 8. 
    (from www.mdk12.org)Use the diagram below to answer the following item. Where is the sugar? - ProProfs

    (from www.mdk12.org)Use the diagram below to answer the following item. Where is the sugar?

    • 1

    • 2

    • 3

    • 4

    Correct Answer
    A. 2
    Explanation
    Based on the diagram provided, the sugar is located in position 2.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 17, 2009
    Quiz Created by
    Akimamarshall
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