Class 9 Exam > Class 9 Videos > Crash Course: Class 9 (Hinglish) > Cell Membrane
Cell Membrane Video Lecture | Crash Course: Class 9 (Hinglish)
FAQs on Cell Membrane Video Lecture - Crash Course: Class 9 (Hinglish)
| 1. What is the cell membrane? |  |
Ans. The cell membrane, also known as the plasma membrane, is a thin, flexible barrier that surrounds and encloses the contents of a cell. It separates the cytoplasm (internal environment) of the cell from the external environment and regulates the movement of substances in and out of the cell.
| 2. What is the composition of the cell membrane? | |
Ans. The cell membrane is mainly composed of phospholipids arranged in a double layer called the phospholipid bilayer. Each phospholipid molecule consists of a hydrophilic (water-loving) head and two hydrophobic (water-repelling) tails. Proteins, cholesterol, and carbohydrates are also present in the cell membrane, contributing to its structure and function.
| 3. How does the cell membrane regulate the movement of substances? | |
Ans. The cell membrane is selectively permeable, meaning it allows certain substances to pass through while restricting others. Small, non-polar molecules like oxygen and carbon dioxide can pass through the lipid bilayer by simple diffusion. Larger molecules, ions, and polar molecules require specific transport proteins to facilitate their movement across the membrane.
| 4. What is the role of proteins in the cell membrane? | |
Ans. Proteins in the cell membrane serve various functions. Some proteins act as channels or transporters, allowing specific molecules or ions to move across the membrane. Others serve as receptors, which bind to specific molecules and initiate cellular responses. Proteins also play a role in cell adhesion, cell signaling, and enzymatic activities within the cell membrane.
| 5. How does the cell membrane maintain the cell's internal environment? | |
Ans. The cell membrane helps maintain the cell's internal environment by regulating the transport of substances in and out of the cell. It prevents the entry of harmful substances and controls the exit of waste products. The cell membrane also maintains the concentration of ions and molecules necessary for cellular processes through active transport and selective permeability.
Related Exams
About this Video
|
2.2K Views |
|
4.66/5 Rating |
|
Nov 22, 2024 Last updated |
Video Description: Cell Membrane for Class 9 2024 is part of Crash Course: Class 9 (Hinglish) preparation.
The notes and questions for Cell Membrane have been prepared according to the Class 9 exam syllabus.
Information about Cell Membrane covers all important topics for Class 9 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Cell Membrane.
Introduction of Cell Membrane in English is available as part of our Crash Course: Class 9 (Hinglish) for Class 9 & Cell Membrane in
Hindi for Crash Course: Class 9 (Hinglish) course. Download more important topics related with notes, lectures and mock test series for
Class 9 Exam by signing up for free.
Description
Video Lecture & Questions for Cell Membrane Video Lecture | Crash Course: Class 9 (Hinglish) - Class 9 full syllabus preparation | Free video for Class 9 exam to prepare for Crash Course: Class 9 (Hinglish).
Information about Cell Membrane
Here you can find the meaning of Cell Membrane defined & explained in the simplest way possible.
Besides explaining types of Cell Membrane theory, EduRev gives you an ample number of questions to practice Cell Membrane tests,
examples and also practice Class 9 tests.
|
Explore Courses for Class 9 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
MCQs
,Free
,Cell Membrane Video Lecture | Crash Course: Class 9 (Hinglish)
,video lectures
,past year papers
,Sample Paper
,Viva Questions
,Summary
,ppt
,Important questions
,Semester Notes
,Cell Membrane Video Lecture | Crash Course: Class 9 (Hinglish)
,Objective type Questions
,shortcuts and tricks
,Previous Year Questions with Solutions
,mock tests for examination
,practice quizzes
,Exam
,Cell Membrane Video Lecture | Crash Course: Class 9 (Hinglish)
,Extra Questions
,study material
;
Study Cell Membrane on the App
Students of Class 9 can study Cell Membrane alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Cell Membrane,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Cell Membrane is prepared as per the latest Class 9 syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup