Plasma Membrane Structure Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Download our mobile app to listen on the go

Get App

Questions and Answers

What is the function of the plasma membrane?

Provides structural support to the cell
Facilitates cellular communication
Stores genetic information
Regulates the transport of materials entering and exiting the cell (correct)

How does the cell membrane appear under a light microscope?

A dense, multi-layered structure
A network of interconnected channels
An opaque, irregular shape
A thin, nearly transparent line surrounding the cell (correct)

What is the appearance of the cell membrane under a transmission electron microscope (TEM)?

Fibrous with a honeycomb-like pattern
Tri-laminar with two dense lines separated by a lucent intermediate zone (correct)
Smooth and featureless
Granular with irregular projections

What is the purpose of freeze-fracture in studying cell membranes?

<p>To study the internal structure of biological samples, particularly cell membranes (C)</p> Signup and view all the answers

What happens during freeze-fracture?

<p>The biological sample is rapidly frozen at extremely low temperatures and then fractured to study its structure (B)</p> Signup and view all the answers

Flashcards are hidden until you start studying