An Informative Quiz On Basic Biochemistry

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  • 1/13 Questions

    Which are examples of carbohydrates?

    • Starch, glucose, fructose
    • Cellulose, glycogen, protease
    • Cholesterol, wax, carcinogen
    • Trypsin, lipase, testosterone
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About This Quiz

Living organisms have a lot of chemicals and elements within them, and studying biochemistry is one way of opening ourselves to this. If you have just begun studying biochemistry, the informative quiz below on basic biochemistry is perfect for testing out what you know. Give it a try and see what you should read up on.

An Informative Quiz On Basic Biochemistry - Quiz

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  • 2. 

    A biomacromolecule which consists of a polymer of fatty acids is a

    • Nucleotide

    • Lipid

    • Carbohydrate

    • Amino acid

    Correct Answer
    A. Lipid
    Explanation
    two of these (nucleotide and amino acids) are monomers, so that limits the answer choices. lipids are made of fatty acids and carbohydrates are made of monosaccharides.

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  • 3. 

    If you wanted to get a lot of quick energy before a soccer match, which biomacromolecules would your body need to break down?

    • Protein

    • Nucleic acid

    • Carbohydrate

    • Lipid

    Correct Answer
    A. Carbohydrate
    Explanation
    Carbohydrates are the primary source of quick energy for the body, as they are rapidly broken down into glucose, which can be readily used by cells for energy production during high-intensity activities like a soccer match.

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  • 4. 

    An appropriate enzyme to catalyze a reaction involving the imaginary substance camelsine would be ______________.

    • Camelose

    • Cameline

    • Camelise

    • Camelase

    Correct Answer
    A. Camelase
    Explanation
    enzymes are typically named after the substrate on which they act, and they typically end in -ase.

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  • 5. 

    Which one is odd here?

    • Nucleic acid

    • Monosaccharides

    • Lipid

    • Protein

    Correct Answer
    A. Monosaccharides
    Explanation
    a monosaccharide is a monomer; all the rest are polymers

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  • 6. 

    Unlike saturated fatty acids, unsaturated fatty acids contain what kind of bonds between carbon atoms?

    • Double

    • Single

    • Hydrogen

    • Covalent

    Correct Answer
    A. Double
    Explanation
    the bonds between atoms in both saturated and unsaturated are covalent. hydrogen bonds occur between atoms of different molecules. both have single bonds, but only unsaturated fatty acids have DOUBLE bonds, thus providing more space in between hydrogen atoms so the lipid can move more. this is why unsaturated fats are liquid at room temperature.

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  • 7. 

    Complete the analogy -lock : key :: enzyme : _________

    • Substrate

    • Active site

    • Product

    • Protein

    Correct Answer
    A. Substrate
    Explanation
    although "induced fit" is the best model now, the enzyme and substrate fit together like puzzle pieces, or like a lock and key. the enzyme is the lock, while the substrate is the key.

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  • 8. 

    Which would NOT be a correct match?

    • Keratin - amino acid

    • Phospholipid - fatty acid

    • DNA - nucleotide

    • Cellulase - monosaccharide

    Correct Answer
    A. Cellulase - monosaccharide
    Explanation
    this matches the example with the monomer. cellulASE is an enzyme, which is a protein. cellulOSE would be the carbohydrate.

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  • 9. 
    This represents what biomacromolecules? - ProProfs

    This represents what biomacromolecules?

    • Protein

    • Lipid

    • Carbohydrate

    • Nucleic acid

    Correct Answer
    A. Protein
    Explanation
    if you don't recall the structure (amino acid), look at the elements: C, H, O, and N. that's protein.

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  • 10. 

    An enzyme __________ the activation energy needed to achieve a chemical reaction.

    • Stabilizes

    • Raises

    • Lowers

    • Eliminates

    Correct Answer
    A. Lowers
    Explanation
    enzymes reduce the amount of energy needed but there will always be some activation energy required.

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  • 11. 

    If you wanted to increase the rate of an enzyme-catalyzed reaction, what would you do?

    • Decrease the amount of substrate by one-third

    • Increase the pH by 4 levels on the pH scale

    • Decrease the amount of enzyme by half

    • Increase the temperature by 10 C

    Correct Answer
    A. Increase the temperature by 10 C
    Explanation
    Increasing the temperature typically increases the rate of enzyme-catalyzed reactions up to a certain point. This is because higher temperatures provide more kinetic energy to the reacting molecules, leading to more frequent collisions and a higher likelihood of successful interactions between the enzyme and substrate. However, it's important to note that excessively high temperatures can denature enzymes, leading to a decrease in reaction rate or complete loss of enzyme activity. Therefore, while increasing the temperature can enhance reaction rates, it should be done within a suitable temperature range for the specific enzyme being used.

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  • 12. 

    A feature of nucleic acids not found in lipids is:

    • Oxygen

    • Potassium

    • Phosphorus

    • Hydrogen

    Correct Answer
    A. Phosphorus
    Explanation
    Nucleic acids, such as DNA and RNA, contain phosphorus as a key component of their structure, specifically in the phosphate groups that link nucleotide units together. Phosphorus is not a typical component of lipids. Lipids primarily consist of carbon, hydrogen, and oxygen, with some lipids containing sulfur in addition to these elements. While nucleic acids contain phosphorus, lipids do not, making phosphorus a distinguishing feature of nucleic acids

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  • 13. 

    What is a function of lipids?

    • Used as cell receptors, enzymes, and transport molecules in the human body.

    • Used as the main energy source for plants.

    • Stores hereditary information in bacteria.

    • Used as insulation for marine arctic animals.

    Correct Answer
    A. Used as insulation for marine arctic animals.
    Explanation
    don't let the organism stuff at the end confuse you - that's just specific information used as examples. lipids provide insulation for organisms, no matter what kind they are. they also store energy but are not the main source of energy (this is carbohydrates).

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  • Current Version
  • Mar 13, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 19, 2010
    Quiz Created by
    Smachel
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