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...

12 Questions

1 Views

Fluid Mosaic Model of Cell Membranes

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 does the fluid mosaic model of cell membranes emphasize?

Free movement of most phospholipids and many proteins (correct)

Covalent bonding of phospholipids and proteins

Anchoring of all molecules to the extracellular matrix

Immobilization of all membrane components

How does a membrane's fluidity change with a high proportion of unsaturated fatty acids?

It remains unchanged

It solidifies

It becomes less fluid

It becomes more fluid (correct)

What role does cholesterol play in moderating a membrane's fluidity?

Decreases fluidity in already fluid membranes

Decreases fluidity in already viscous membranes (correct)

Has no effect on membrane fluidity

Increases fluidity in already viscous membranes

What is the function of transport proteins in cell membranes?

Allow for facilitated diffusion of polar molecules and ions Signup and view all the answers

How do channel proteins differ from carrier proteins in terms of membrane transport?

Carrier proteins change shape to transport molecules Signup and view all the answers

If diffusion does not occur due to a difference in solute concentration, what process results in a net movement of water across a membrane?

Osmosis Signup and view all the answers

What type of transport proteins can move more than one solute at a time?

Symport proteins Signup and view all the answers

What process uses transmembrane receptor proteins to selectively bring in large amounts of the same solute very specifically?

Receptor mediated endocytosis Signup and view all the answers

What occurs when a ligand binds to a receptor protein, causing a change in the shape of the protein?

Reception Signup and view all the answers

Which type of proteins can move solutes towards higher concentration using metabolic energy?

Antiport proteins Signup and view all the answers

What process involves assemblages of molecules being brought into a cell and can create large vesicles to bring in large amounts of material?

Phagocytosis Signup and view all the answers

What type of transport allows cells to constantly transport many different solutes at the same time using multiple transport proteins working together?

Active transport Signup and view all the answers