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  • 1/8 Questions

    What are the three types of carbohydrate molecules?

    • Unosaccharides, doublesaccharides, multiplesaccharides
    • Monosaccharides, sugar, glucose
    • Monosaccharides, polysaccharides, disaccharides
    • Starch, glycogen, glucose
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Revision On Previous Topics..... - Quiz
About This Quiz

This quiz revisits key topics in biochemistry, focusing on carbohydrates. It assesses understanding of life's molecular components, types of carbohydrates, their structures, and functions. Ideal for students reinforcing biochemistry basics.

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  • 2. 

    Proteins are made up of Carbon, hydrogen, oxygen and what other element?

    • Potassium

    • Iron

    • Nitrogen

    • Neon

    Correct Answer
    A. Nitrogen
    Explanation
    Proteins are macromolecules composed of amino acids, which contain carbon, hydrogen, and oxygen. Nitrogen is the fourth essential element found in proteins. It plays a crucial role in the structure and function of proteins, as it forms the peptide bonds between amino acids, giving proteins their unique three-dimensional shape. Without nitrogen, proteins would not be able to carry out their various functions in the body, such as enzyme catalysis, cell signaling, and structural support. Therefore, nitrogen is an essential element in the composition of proteins.

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  • 3. 

    Monosaccharide means_____Disaccharide means_____ and polysaccharide means _____?

    • One Sugar, Two Sugar and Many Sugars

    • One Fiber, Two Fiber, Three Fiber

    • One Carbohydrate, Two Carbohydrates, Many Carbohydrates.

    • One Carbohydrate, Two Carbohydrates, Three Carbohydrates

    • A and C

    Correct Answer
    A. One Sugar, Two Sugar and Many Sugars
    Explanation
    Monosaccharide refers to a single sugar molecule, disaccharide refers to two sugar molecules bonded together, and polysaccharide refers to a complex carbohydrate made up of many sugar molecules bonded together.

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  • 4. 

    Some functions of a carbohydrate include

    • Storage of energy.

    • Provide an easy supply of energy for the body to use.

    • Trigger growth of cells.

    • A and B

    Correct Answer
    A. A and B
    Explanation
    Carbohydrates serve as a storage form of energy in the body, which can be used when needed. They also provide a readily available source of energy for the body to use. Therefore, both options A and B are correct as they accurately describe the functions of carbohydrates.

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  • 5. 

    What elements make up a carbohydrate?

    Correct Answer
    Carbon
    Hydrogen
    Oxygen
    Explanation
    Carbohydrates are organic compounds that consist of carbon, hydrogen, and oxygen atoms. These three elements are the building blocks of carbohydrates. Carbon provides the backbone of the molecule, while hydrogen and oxygen atoms are attached to the carbon atoms in a specific ratio of 2:1, forming the characteristic structure of carbohydrates. These elements are essential for the formation of glucose, which is the primary source of energy for the body.

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  • 6. 

    What are the four molecules of life?

    • Carbohydrates and Proteins

    • Iron and Minerals

    • Water and blood

    • Lipids and nucleic acids

    • A and D

    Correct Answer
    A. A and D
    Explanation
    The correct answer is A and D. Carbohydrates, lipids, proteins, and nucleic acids are considered the four molecules of life. These molecules are essential for various biological processes and play crucial roles in the structure and function of cells. Carbohydrates provide energy, lipids are important for cell membranes and energy storage, proteins are involved in almost all cellular activities, and nucleic acids carry genetic information. Iron and minerals, water and blood are not considered the four molecules of life.

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  • 7. 

    Two examples of either a monosaccharide, disaccharide, or polysaccharide are

    Correct Answer
    starch
    glucose
    fructose
    galactose
    cellulose
    Explanation
    The given examples are all types of carbohydrates. Starch is a polysaccharide, which is a complex carbohydrate made up of many glucose molecules bonded together. Glucose, fructose, and galactose are monosaccharides, which are simple sugars that cannot be broken down into smaller sugars. Cellulose is also a polysaccharide, but it is different from starch as it cannot be digested by humans and is a major component of plant cell walls.

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  • 8. 

    Amino Acids

    • Are linked together by peptide bonds

    • Are the basic building blocks of muscle cells

    • Comprise the primary layer of protein structure

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    Amino acids are indeed linked together by peptide bonds, which form the backbone of proteins. They are also the basic building blocks of muscle cells, as proteins are essential for muscle growth and repair. Additionally, amino acids make up the primary layer of protein structure, determining the overall shape and function of proteins. Therefore, all of the given statements are correct.

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Quiz Review Timeline (Updated): Mar 21, 2023 +

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 28, 2015
    Quiz Created by
    Haf_zan81
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