Unit 3 Target 4: Organic Vs Inorganic Quiz

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Unit 3 Target 4: Organic Vs Inorganic Quiz - Quiz

Questions and Answers
  • 1. 

    Which of the following chemical formulas represents an organic molecule?

    Correct Answer
    B.
    Explanation
    The chemical formula that represents an organic molecule is C6H12O6. Organic molecules are composed primarily of carbon (C) and hydrogen (H), with the occasional inclusion of oxygen (O). C6H12O6 is the formula for glucose, which is a common organic molecule found in living organisms.

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  • 2. 

    Why are organic molecules so diverse?   

    • A.

      They form mirror images of each other.

    • B.

      They contain oxygen, which has 8 valence electrons.

    • C.

      They form when any naturally occurring elements combine.

    • D.

      They have carbon skeletons that vary greatly in arrangement.

    Correct Answer
    D. They have carbon skeletons that vary greatly in arrangement.
    Explanation
    Organic molecules are diverse because they have carbon skeletons that can vary greatly in arrangement. Carbon atoms can form bonds with other carbon atoms and other elements, allowing for a wide range of possible structures. This diversity in arrangement leads to the formation of different organic compounds with unique properties and functions.

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  • 3. 

    Which of the following is the MAIN difference between organic compounds and inorganic compounds?  

    • A.

      Organic compounds provide energy for cells.

    • B.

      Organic compounds contain carbon.

    • C.

      Organic compounds are the building blocks of cells.

    • D.

      Organic compounds contain hydrogen.

    Correct Answer
    B. Organic compounds contain carbon.
    Explanation
    The main difference between organic compounds and inorganic compounds is that organic compounds contain carbon. Carbon is the key element that distinguishes organic compounds from inorganic compounds. Organic compounds are typically found in living organisms and play a vital role in biological processes, such as providing energy for cells and serving as the building blocks of cells. In contrast, inorganic compounds do not contain carbon and are often minerals or non-living substances.

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  • 4. 

    Which of the following is FALSE?  

    • A.

      Nucleic acids are a polymer made of amino acids.

    • B.

      Nucleic acids are found in the cells of all living organisms.

    • C.

      Nucleic acids contain the genetic information for making proteins.

    • D.

      Nucleic acids include both DNA and RNA.

    Correct Answer
    A. Nucleic acids are a polymer made of amino acids.
    Explanation
    This statement is false because nucleic acids are not made of amino acids. Nucleic acids are actually polymers made up of nucleotides, which consist of a sugar molecule, a phosphate group, and a nitrogenous base. Amino acids, on the other hand, are the building blocks of proteins.

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  • 5. 

    Which one is NOT a lipid?

    • A.

      Earwax

    • B.

      Starch

    • C.

      Cholesterol

    • D.

      Saturated fats

    Correct Answer
    B. Starch
    Explanation
    Starch is not a lipid because it is a complex carbohydrate, composed of long chains of glucose molecules. Lipids, on the other hand, are a diverse group of molecules that include fats, oils, and waxes. Cholesterol and saturated fats are examples of lipids, while earwax is a type of lipid-rich secretion.

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  • 6. 

    Which of the following is the best molecule for long-term energy storage in a the cell?    

    • A.

      Proteins

    • B.

      Polysaccharides

    • C.

      Lipids

    • D.

      Monosaccharides

    Correct Answer
    C. Lipids
    Explanation
    Lipids are the best molecule for long-term energy storage in a cell. Lipids, such as fats and oils, contain more than twice the amount of energy per gram compared to proteins, polysaccharides, and monosaccharides. Additionally, lipids are insoluble in water, which allows them to be stored in a compact and concentrated form without affecting the osmotic balance of the cell. This makes lipids an efficient and ideal choice for long-term energy storage in cells.

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  • 7. 

    All of the following are examples of carbohydrates EXCEPT

    • A.

      Glucose.

    • B.

      Cellulose.

    • C.

      Steroids.

    • D.

      Glycogen.

    Correct Answer
    C. Steroids.
    Explanation
    Steroids are not examples of carbohydrates because they are a class of organic compounds that have a different chemical structure than carbohydrates. Carbohydrates are composed of carbon, hydrogen, and oxygen atoms, while steroids are composed of four interconnected carbon rings. Glucose, cellulose, and glycogen are all examples of carbohydrates because they consist of sugar molecules and are used as a source of energy in living organisms.

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  • 8. 

    Which of the following is NOT a function of proteins?   

    • A.

      Speed up chemical reactions in cells

    • B.

      Build tissues like bone, muscle, and blood

    • C.

      Transport substances

    • D.

      Store and transmit genetic information

    Correct Answer
    D. Store and transmit genetic information
    Explanation
    Proteins are macromolecules that perform a wide range of functions in the body. They are involved in speeding up chemical reactions in cells, building tissues like bone, muscle, and blood, and transporting substances. However, proteins do not store and transmit genetic information. Genetic information is stored in DNA and transmitted through the process of replication and transcription. Proteins play a role in gene expression and regulation, but they themselves do not store or transmit genetic information.

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  • 9. 

    Which of the following statements about glucose is FALSE?   

    • A.

      Glucose is a carbohydrate.

    • B.

      Glucose is a polysaccharide.

    • C.

      Glucose is a source of energy for the cell.

    • D.

      Glucose is a monosaccharide.

    Correct Answer
    B. Glucose is a polysaccharide.
    Explanation
    Glucose is a monosaccharide, not a polysaccharide. Polysaccharides are complex carbohydrates made up of multiple monosaccharide units bonded together, while glucose is a simple sugar and a monosaccharide itself.

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  • 10. 

    Proteins are made of long chains of  

    • A.

      Monosaccharides.

    • B.

      Amino acids.

    • C.

      Fatty acids.

    • D.

      Nucleotides.

    Correct Answer
    B. Amino acids.
    Explanation
    Proteins are made up of long chains of amino acids. Amino acids are the building blocks of proteins and are connected together through peptide bonds to form a polypeptide chain. Each amino acid consists of an amino group, a carboxyl group, and a unique side chain. These side chains determine the properties and functions of the protein. Monosaccharides are simple sugars, fatty acids are the building blocks of lipids, and nucleotides are the building blocks of nucleic acids, not proteins. Therefore, the correct answer is amino acids.

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  • 11. 

    Which of the following is NOT a monomer?   

    • A.

      Nucleotide

    • B.

      Amino acid

    • C.

      Protein

    • D.

      Monosaccharide

    Correct Answer
    C. Protein
    Explanation
    Protein is the correct answer because it is not a monomer. A monomer is a small molecule that can join together with other monomers to form a polymer. Nucleotide, amino acid, and monosaccharide are all examples of monomers. Nucleotides join together to form nucleic acids, amino acids join together to form proteins, and monosaccharides join together to form carbohydrates. However, proteins are made up of long chains of amino acids and are considered polymers, not monomers.

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  • 12. 

    Which of the following is NOT true of DNA?

    • A.

      DNA contains information for growth and development.

    • B.

      DNA is a polymer made of amino acids.

    • C.

      DNA contains the nitrogen bases G, C, A, & T.

    • D.

      DNA is found in the cells of all living organisms.

    Correct Answer
    B. DNA is a polymer made of amino acids.
    Explanation
    DNA is not a polymer made of amino acids. It is a polymer made of nucleotides, which consist of a sugar (deoxyribose), a phosphate group, and a nitrogenous base (G, C, A, or T). Amino acids, on the other hand, are the building blocks of proteins.

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  • 13. 

    Which element would you expect to find in proteins and nucleic acids but not in carbohydrates or lipids?   

    • A.

      Carbon

    • B.

      Oxygen

    • C.

      Phosphorus

    • D.

      Hydrogen

    • E.

      Nitrogen

    Correct Answer
    E. Nitrogen
    Explanation
    Proteins and nucleic acids are macromolecules that contain nitrogen as an essential component, which is required for the formation of amino acids and nucleotides, respectively. Carbohydrates and lipids, on the other hand, do not contain nitrogen in their structure. Therefore, nitrogen is the element that can be expected to be found in proteins and nucleic acids but not in carbohydrates or lipids.

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  • 14. 

    A monosaccharide is a

    • A.

      Carbohydrate

    • B.

      Lipid

    • C.

      Protein

    • D.

      Nucleic acid

    Correct Answer
    A. Carbohydrate
    Explanation
    A monosaccharide is a type of carbohydrate. Carbohydrates are organic compounds that consist of carbon, hydrogen, and oxygen atoms, with a general formula of (CH2O)n. Monosaccharides are the simplest form of carbohydrates, consisting of a single sugar molecule. They are the building blocks of more complex carbohydrates, such as disaccharides and polysaccharides. Monosaccharides are an important source of energy for living organisms and are commonly found in foods such as fruits, vegetables, and grains. They also play a crucial role in cellular processes and are involved in the structure of nucleic acids and other biomolecules.

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  • 15. 

    Animals store glucose in the form of

    • A.

      Wax

    • B.

      Glycogen

    • C.

      Lipids

    • D.

      Cellulose

    Correct Answer
    B. Glycogen
    Explanation
    Animals store glucose in the form of glycogen. Glycogen is a polysaccharide that serves as the main storage form of glucose in animals. It is primarily stored in the liver and muscles. When the body needs energy, glycogen is broken down into glucose and released into the bloodstream. This process helps to maintain blood sugar levels and provide a readily available source of energy for the body's cells. Unlike wax, lipids, and cellulose, glycogen is specifically designed for energy storage in animals.

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  • 16. 

    Which organic molecule below is the monomer found in nucleic acids?   

    • A.

      Monosaccharides

    • B.

      Nucleotides

    • C.

      Amino acids

    • D.

      Steroids

    Correct Answer
    B. Nucleotides
    Explanation
    Nucleotides are the monomers found in nucleic acids. Nucleic acids, such as DNA and RNA, are made up of long chains of nucleotides. Each nucleotide consists of a sugar molecule (either ribose or deoxyribose), a phosphate group, and a nitrogenous base (adenine, thymine, cytosine, guanine, or uracil). These nucleotides join together through a process called polymerization to form the backbone of nucleic acids. Therefore, nucleotides are the building blocks or monomers of nucleic acids.

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  • 17. 

    Which of the following is a polymer made of amino acids?    

    • A.

      Carbohydrates

    • B.

      Fatty acids

    • C.

      Nucleic acids

    • D.

      Proteins

    Correct Answer
    D. Proteins
    Explanation
    Proteins are polymers made up of amino acids. Amino acids are the building blocks of proteins, and they are linked together through peptide bonds to form long chains. These chains then fold into complex three-dimensional structures, which determine the protein's function. Carbohydrates, fatty acids, and nucleic acids are not polymers made of amino acids.

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  • 18. 

    Refer to the illustration above. Molecules like this are found in

    • A.

      Carbohydrates.

    • B.

      Nucleic acids.

    • C.

      Lipids.

    • D.

      Proteins.

    Correct Answer
    C. Lipids.
    Explanation
    The illustration above shows a molecule that is found in lipids. Lipids are a class of biological molecules that include fats, oils, and waxes. They are characterized by their hydrophobic nature, meaning they are insoluble in water. The molecule in the illustration has a long hydrocarbon chain, which is a characteristic feature of lipids. Carbohydrates, nucleic acids, and proteins have different molecular structures and are not represented in the illustration.

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  • 19. 

    Refer to the illustration above. This molecule is a ___.

    • A.

      nucleotide

    • B.

      Amino acid

    • C.

      Fatty acid

    • D.

      Monosaccharide

    Correct Answer
    D. Monosaccharide
    Explanation
    The molecule shown in the illustration is a monosaccharide. Monosaccharides are simple sugars that cannot be broken down into smaller sugars. They are the building blocks of more complex carbohydrates like polysaccharides and are characterized by having a single sugar unit. In the illustration, the molecule appears to have a ring structure, which is a common characteristic of monosaccharides like glucose and fructose. Therefore, the correct answer is monosaccharide.

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  • 20. 

    Refer to the illustration above. Molecules like this are found in

    • A.

      carbohydrates.

    • B.

      Nucleic acids.

    • C.

      Lipids.

    • D.

      Proteins.

    Correct Answer
    D. Proteins.
    Explanation
    The illustration shows a molecule with a complex structure, which is characteristic of proteins. Proteins are macromolecules made up of amino acids and are essential for various biological functions. They have a wide range of structures and functions, including enzymes, antibodies, and structural components. Carbohydrates, nucleic acids, and lipids have different molecular structures and are not represented in the illustration. Hence, the correct answer is proteins.

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  • 21. 

    Refer to the illustration above. This molecule is a ___.

    • A.

      Nucleotide

    • B.

      Amino acid

    • C.

      Fatty acid

    • D.

      Monosaccharide

    Correct Answer
    A. Nucleotide
    Explanation
    Based on the given illustration, the molecule shown contains a phosphate group, a sugar molecule, and a nitrogenous base. These three components are characteristic of a nucleotide, which is the building block of nucleic acids such as DNA and RNA. Therefore, the correct answer is nucleotide.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 12, 2014
    Quiz Created by
    Hbhutta
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