©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
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 ribosomal subunits -
Ans:✔✔-nucleus, rRNA
What are the four binding sites in the ribosome for translation? - Ans:✔✔-mRNA-binding, A site, P site,
and E site
What types of proteins are involved in exporting mRNA out of the nucleus - Ans:✔✔-Poly-A-binding
protein, Cap-binding protein, Exon junction complex
What does dihydrouridine contribute to tRNA? - Ans:✔✔-it destabilizes the RNA
structure and makes it more flexible
Page 1/5
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
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
Page 2/5
FIRST PUBLISH OCTOBER 2024
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 ribosomal subunits -
Ans:✔✔-nucleus, rRNA
What are the four binding sites in the ribosome for translation? - Ans:✔✔-mRNA-binding, A site, P site,
and E site
What types of proteins are involved in exporting mRNA out of the nucleus - Ans:✔✔-Poly-A-binding
protein, Cap-binding protein, Exon junction complex
What does dihydrouridine contribute to tRNA? - Ans:✔✔-it destabilizes the RNA
structure and makes it more flexible
Page 1/5
, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
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
Page 2/5
