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    2.

    Select the wrong statement.

    A

    Work is a scalar quantity

    B

    Kinetic energy depends on the mass and speed of the object

    C

    The work-energy theorem states that the net work done on an object is equal to the change in its kinetic energy

    D

    Power is the amount of work done

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    6.

    How does the role of extNAD+ext{NAD}^+ in cellular respiration relate to energy production?

    A

    It directly phosphorylates ADP to ATP.

    B

    It acts as the final electron acceptor in the electron transport chain.

    C

    It transports electrons to the electron transport chain, contributing to ATP synthesis.

    D

    It provides the energy for substrate-level phosphorylation.

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    10.

    In Krebs’ cycle,

    A

    ADP is converted into ATP

    B

    Pyruvic acid is converted into CO2C{O_2} and H2O{H_2}O

    C

    Glucose is converted into CO2C{O_2}

    D

    Pyruvic acid is converted into ATP

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