TRUE or FALSE [For extra credit, correct False statements] a. Proteins that lack a sorting signal remain permanently in the cytosol. (T/ F) b. Unlike transport to the ER, directing proteins to mitochondria does not require a signal sequence. (T/ F) c. Even ribosome proteins require a nuclear localization signal to enter the nucleus. (T / F) d. A nuclear localization signal (NSL) is a specific kind of N- terminal Signal Sequence. (T/ F) e. Signal sequences are necessary and sufficient to direct a protein to the correct compartment. (T/ F) f. Import into ER and retention in the ER lumen are signaled by the same hydrophobic signal sequence. (T/ F) g. Import and export to and from the nucleus requires different sequence signals. (T/ F) h. Proteins enter peroxisomes from both the cytosol and the endoplasmic reticulum. (T/ F)

TRUE or FALSE [For extra credit, correct False statements] a. Proteins that lack a sorting signal remain permanently in the cytosol. (T/ F) b. Unlike transport to the ER, directing proteins to mitochondria does not require a signal sequence. (T/ F) c. Even ribosome proteins require a nuclear localization signal to enter the nucleus. (T / F) d. A nuclear localization signal (NSL) is a specific kind of N- terminal Signal Sequence. (T/ F) e. Signal sequences are necessary and sufficient to direct a protein to the correct compartment. (T/ F) f. Import into ER and retention in the ER lumen are signaled by the same hydrophobic signal sequence. (T/ F) g. Import and export to and from the nucleus requires different sequence signals. (T/ F) h. Proteins enter peroxisomes from both the cytosol and the endoplasmic reticulum. (T/ F)

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter9: Cell Communication

Section: Chapter Questions

Problem 3ITD

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