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)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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T OR 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)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F91756525-5c80-4bb1-a7eb-fd68bef7ae3d%2F03e78dd5-530c-40bf-8352-49b905a238e3%2Feqiszll_processed.png&w=3840&q=75)
Transcribed Image Text: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)
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