Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

18 Questions

5 Views

Biochem Lecture 10

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the function of the 5' cap in eukaryotic mRNAs?

Protects RNA from degradation by ribosomes

Signals the start of translation by forming a binding site for the ribosome (correct)

Initiates translation by binding to the nucleus

Stabilizes the mRNA by forming a binding site for mitochondria

What is the linkage between 7-Methylguanosine and the 5' end of almost all eukaryotic mRNAs?

5'-5' triphosphate linkage (correct)

3'-5' phosphodiester linkage

3'-3' triphosphate linkage

5'-3' phosphodiester linkage

What does the presence of introns in genes signify?

They are only found in bacteria

They prevent gene expression

They are present in most genes in vertebrates and some in yeast (correct)

They stabilize mRNA molecules

Where is the capbinding complex (CBC) associated during the synthesis of the 5' cap?

Tethered to Pol II through an association with the CTD Signup and view all the answers

What is one of the post-transcriptional processes involved in RNA processing?

Splicing out introns Signup and view all the answers

When does the addition of a 5'-cap occur in eukaryotic cells occur?

Before synthesis of the primary transcript is complete Signup and view all the answers

What is the function of splicing in post-transcriptional RNA processing?

Removing introns and attaching exons Signup and view all the answers

Where does processing of eukaryotic mRNA take place?

In the nucleus Signup and view all the answers

What are the three main processes involved in forming mature mRNA from a primary transcript in eukaryotes?

Capping, polyadenylation, splicing Signup and view all the answers

What is the function of a 3’-poly(A) tail in mRNA processing?

Prevents mRNA degradation Signup and view all the answers

Where does splicing occur during post-transcriptional RNA processing in eukaryotes?

Nucleus Signup and view all the answers

Which process of RNA processing involves removing introns and joining exons together?

Splicing Signup and view all the answers

When does the addition of a 5' cap to eukaryotic mRNAs typically occur?

During transcription Signup and view all the answers

What is the source of methyl groups often found at the 2' position of the first and second nucleotides in eukaryotic mRNAs?

S-adenosyl-methionine (SAM) Signup and view all the answers

Which complex is associated with the capbinding complex (CBC) during the synthesis of the 5' cap?

Capbinding complex Signup and view all the answers

What is the role of introns in most genes in vertebrates?

Contribute to genetic variation Signup and view all the answers

What post-transcriptional modification is involved in removing introns from pre-mRNA in eukaryotes?