Related Questions

    2.

    What is the primary role of enzymes in metabolism?

    A

    Provide energy for reactions

    B

    Transport substances across membranes

    C

    Catalyze metabolic reactions

    D

    Store genetic information

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    3.

    A researcher isolates an enzyme from a thermophilic bacterium and finds that its activity dramatically decreases when incubated at 25°C compared to its optimal temperature of 70°C. This decrease in activity is MOST likely due to:

    A

    Increased substrate affinity at lower temperatures.

    B

    Changes in the enzyme's three-dimensional structure affecting the active site.

    C

    A decrease in the activation energy of the catalyzed reaction.

    D

    An increase in the concentration of competitive inhibitors at lower temperatures.

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    5.

    Which of the following statements is INCORRECT regarding the regulation of metabolic pathways?

    A

    Feedback inhibition involves the end-product of a pathway inhibiting an earlier enzyme.

    B

    Allosteric regulation exclusively involves the binding of molecules to the active site of an enzyme.

    C

    Covalent modification, like phosphorylation, can alter enzyme activity.

    D

    Enzyme compartmentalization within organelles can regulate metabolic flux.

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    9.

    Pick the odd statement out

    A

    Removal of CO2C{O_2} from amino acids converts an amino acid into an amine

    B

    All the biomolecules have a turnover

    C

    Metabolic pathway are termed as transformation reactions

    D

    Metabolic pathways always follows a linear route

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    10.

    The term metabolism means

    A

    The sum of all the enzymatically catalysed chemical reactions constantly taking place in the cells and tissues of the living organisms

    B

    Processes that change the small molecules into larger ones

    C

    Processes that converts the large molecules into smaller ones

    D

    None of the above

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