Related Questions

    5.

    Three of the following statements regarding cell organelles are correct, while one is wrong. Which one is wrong?

    A

    Lysosomes are double membraned vesicles budded off from Golgi apparatus and contain digestive enzymes

    B

    Endoplasmic reticulum consists of a network of membranous tubule and helps in transport, synthesis and secretion

    C

    Leucoplasts are bound by two membranes, lack pigment but contain their own DNA and protein synthesising machinery

    D

    Sphaerosomes are single membrane bound and are associated with synthesis and storage of lipids

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    7.

    Which of the following statements regarding the signal recognition particle (SRP) and its receptor is INCORRECT?

    A

    The SRP receptor is an integral membrane protein of the ER.

    B

    SRP binds to both the signal sequence and the ribosome, halting translation.

    C

    SRP guides the ribosome-mRNA complex to the ER membrane.

    D

    SRP binds to the nascent polypeptide chain only after it has completely emerged from the ribosome.

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    8.

    In eukaryotic cell, thylakoids, if present,

    A

    Are grouped inside the chloroplasts

    B

    Lies freely in the cytoplasm

    C

    Lies freely outside the cytoplasm

    D

    Grouped outside the cytoplasm

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