ASU BIO 353 Exam 2 short answer Lecture 8-13 Updated 2024
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Course
2024/2025
Institution
2024/2025
ASU BIO 353 Exam 2 short answer
Lecture 8-13 Updated 2024
A ribosome contains two dissociable subunits: - Ans:-Large and small, mixture of rRNA and proteins
Ribosomal proteins are
made in the - Ans:-cytoplasm
Ribosomal proteins are transported to the ___ to join with ____ to assemble two ribos...
three primary roles that ribosomes play during protein synthesis - Ans:✔✔-captures charged tRNA, holds
charged tRNA in position, covalently links amino acids to form polypeptide chain
mRNA-binding site - Ans:✔✔-message always binds to small subunit first, then large subunit binds
A Site (aminoacyl-tRNA site) - Ans:✔✔-binds each newly arriving charged tRNA and holds it until peptide
bond formed
P site (peptidyl-tRNA site) - Ans:✔✔-holds the tRNA carrying the growing polypeptide chain
E site (exit site) - Ans:✔✔-site from which spent tRNAs is rejected
Lipid Rafts are localized regions of plasma membrane composed of elevated levels of - Ans:✔✔-
cholesterol, protein, sphingolipids
he hydrocarbon chains of
sphingolipids are - Ans:✔✔-longer/ saturated
lipid rafts are - Ans:✔✔-thicker and more viscous. Makes them more tightly packed
Lipid rafts
compartmentalize
cellular processes by serving as organizing centers for the
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