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...

Protein Tertiary Structure and Secondary Structures Quiz

10 Questions

1 Views

Protein Tertiary Structure and Secondary Structures Quiz

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 makes the hydrogen-bonded sequences in β-pleated sheets stronger when they run antiparallel to adjacent elements?

N-H and C=O groups can line up as closely, strengthening the H-bonds.

The structure becomes more unstable, leading to stronger interactions.

Ionic bonds are formed between adjacent elements, increasing the hydrogen bond strength.

The geometry is such that N-H and C=O groups can't line up closely, weakening the H-bonds. (correct)

Which type of bonds stabilize the tertiary structure of proteins?

Hydrophobic bonds between R-groups (correct)

Covalent bonds between N-H and C=O groups

Van der Waals forces between R-groups

Ionic bonds between N-H and C=O groups

What is the result of disrupting the four interactions that stabilize a protein's tertiary structure?

Increased activity of the protein

Enhanced stability of the protein structure

Formation of stronger hydrogen bonds

Denaturation or unfolding of the protein (correct)

What type of interactions play a key role in creating the tertiary structure of proteins?

Hydrogen bonds Signup and view all the answers

In the example of hemoglobin provided in the text, how many polypeptide subunits come together to form a complete, functional hemoglobin molecule?

Four Signup and view all the answers

Where is the information to build the polypeptide subunits of hemoglobin found?

In two different genes Signup and view all the answers

What defines a protein's primary structure?

The sequence of amino acids joined by peptide bonds Signup and view all the answers

Which type of bond in a protein's structure exhibits characteristics of a double bond?

Peptide bond Signup and view all the answers

What do the polypeptide chains in a protein's structure lack flexibility due to?

The rigidity of the single bonds on either side of the peptide bond Signup and view all the answers

Which structural elements in proteins are formed without involving the R-groups?

Primary structure Signup and view all the answers