Prokaryotic Cell

Duration: 12 min

This video lesson is available to enrolled students.

Return to /learn/RSSB-SENIOR-COMPUTER-INSTRUCTOR/paper-1-general-science/biology/cell-structure-division/asset-prokaryotic-cell after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About the Course: About the Course
  2. Paper-1 & 2 | Basic Numeracy: अनुपात और समानुपात / Ratio and Proportion, Divisibility Rules, मिश्रण और एलिगेशन / Mixture and Alligation, Permutation and Combination, Logarithm, संख्या पद्धति / Number System, महत्तम समापवर्तक और लघुत्तम समापवर्त्य / HCF and LCM, Sequence and Series (Series), समय, चाल और दूरी / Time, Speed and Distance, प्रतिशत / Percentage, औसत / Average, घन क्षेत्रमिति / Solid Mensuration, Age Problems, Arithmetic, Statistics, Probability, लाभ, हानि और बट्टा / Profit, Loss and Discount, साधारण और चक्रवृद्धि ब्याज / Simple and Compound Interest, Partnership, Speed Mathematics and Basic Mathematics, Algebra, सरलीकरण, घातांक और करणी / Simplification, Indices and Surds, समय और कार्य / Time and Work, Pipe and Cistern, RSSB Specific Videos - Basic Numeracy, समुच्चय, संबंध, फलन और विविक्त गणित / Sets, Relations, Functions and Discrete Mathematics, संख्या पद्धति और संख्या सिद्धांत / Number Systems and Number Theory, निर्देशांक ज्यामिति, सदिश और त्रिविमीय ज्यामिति / Coordinate Geometry, Vectors and 3D Geometry, बहुपद, समीकरण और सम्मिश्र संख्याएँ / Polynomials, Equations and Complex Numbers
  3. Paper-1 & 2 | Data Interpretation: आँकड़ा निर्वचन / Data Interpretation
  4. Paper-1 & 2 | General Mental Ability: Mental Ability, RSSB Specific Videos - Mental Ability
  5. Paper-1 & 2 | Logical Reasoning and Analytical Ability: श्रेणी / Series, कूट लेखन एवं कूट वाचन / Coding-Decoding, Data Sufficiency, अशाब्दिक तर्क / Non-Verbal Reasoning, Syllogisms, बैठक व्यवस्था एवं पहेलियाँ / Seating Arrangement and Puzzles, रक्त संबंध / Blood Relations, दिशा एवं दूरी / Direction and Distance, Analytical Reasoning (Counting Figures Reasoning), गणितीय संक्रियाएँ एवं लुप्त संख्या / Mathematical Operations and Missing Numbers, कैलेंडर एवं घड़ी / Calendar and Clock, Clock, घन, पासा एवं आकृतियों की गिनती / Cubes, Dice and Figure Counting, वेन आरेख, न्याय वाक्य एवं असमानता / Venn Diagrams, Syllogism and Inequalities, सादृश्यता एवं वर्गीकरण / Analogy and Classification, क्रम एवं रैंकिंग / Order and Ranking, कथन आधारित तार्किक विवेचन / Statement-Based Reasoning, Data Arrangement, वर्णमाला एवं संख्या परीक्षण / Alphabet and Number Test, Crypt Arithmetic
  6. Paper-1 & 2 | Decision Making and Problem Solving: आँकड़ों की पर्याप्तता एवं निर्णय क्षमता / Data Sufficiency and Decision Making
  7. Paper-1 | General Science: वैज्ञानिक उपलब्धियाँ और अनुसंधान / Scientific Achievements and Research, Biology, Chemistry, RSSB Specific Videos
  8. Paper-1 | General Awareness: राज्य विशेष सामान्य ज्ञान / State-Specific General Knowledge, समसामयिकी / Current Affairs
  9. Paper-2 | Fundamentals of Computer: Basics of COA, Number System, Floating Point Rep, Number Representation
  10. Paper - 2 | Digital Logic Systems: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits
  11. Paper-2 | Operating Systems: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Linux OS, Distributed Systems
  12. Paper-2 | Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, Relational Calculus, File Organization & Indexing, Transaction Management, Concurrency Control
  13. Paper-2 | Data Structures: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  14. Paper-2 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  15. Paper 2 | Oops, C++, Java: Language Design, OOPS with C++, Java, .Net Programming, Java Fundamentals
  16. Paper 2 | Python: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  17. Paper 2 | Emerging Trends and AI: Emerging Tech Trends, कंप्यूटर के मूल सिद्धांत / Computer Fundamentals, व्यापार, विपणन एवं उपभोक्ता संरक्षण / Trade, Marketing and Consumer Protection, कंप्यूटर नेटवर्क / Computer Networks
  18. Paper-2 | Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Advanced Algorithms
  19. Paper 2 | Data Communication and Network Security: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Security, Ethical Hacking
  20. Paper-2 I Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  21. Paper-2 | Computer Organization and Architecture: Cache Memory Organization, Input Output Organisation, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations
  22. Paper-2 | Web Development: JavaScript-Basics, HTML Basics, CSS, XML
  23. Pedagogy: वृद्धि और विकास / Growth and Development, Concept of Pedagogy, संज्ञानात्मक प्रक्रियाएँ / Cognitive Processes, विकास के सिद्धांत / Theories of Development, समावेशी शिक्षा / Inclusive Education, Experiential Pedagogy, समाजीकरण और जेंडर / Socialisation and Gender, National Education Policy (NEP) 2020
  24. Live Sessions: RSSB Live Sessions
  25. RSSB Paper 1 - Full Mock Tests:
  26. RSSB Paper 2 - Full Mock Tests:
  27. SCI Previous Year Papers:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video provides a step-by-step visual explanation of the structure and function of a prokaryotic cell, focusing on how its internal membrane system evolved. The lecture begins by introducing a prokaryotic cell as a simple, single-celled organism. It then illustrates a key evolutionary process: the infolding of the cell's plasma membrane. This infolding creates internal compartments, which are shown to be the sites for essential cellular processes. The video specifically identifies the membrane infoldings where respiration occurs as mesosomes and those where photosynthesis occurs as thylakoids. A crucial point is emphasized: these structures are not organelles because they are not enclosed by a separate membrane; they are simply parts of the plasma membrane. The video concludes by contrasting this with eukaryotic cells, where organelles are membrane-bound, and notes that in plant cells, the vacuole performs the role of a lysosome. The entire explanation is delivered through a series of hand-drawn diagrams on a black background, with text annotations to clarify the concepts.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video begins with a simple, hand-drawn outline of a prokaryotic cell on a black background. The text 'Prokaryotic cell' is written at the top and then circled. The initial drawing is a basic circle, which is then shown to contain several smaller, teardrop-shaped structures, possibly representing early cellular components. The drawing is then duplicated, and an arrow is drawn between the two circles, suggesting a process of division or transformation. The 'Knowledge Gate' logo is visible in the top right corner.

  2. 2:00 – 5:00 02:00-05:00

    The video continues to illustrate the evolution of the prokaryotic cell. A second, more complex drawing appears, showing the original cell with a membrane that has started to fold inward, creating an internal structure. The text 'the membrane will fold inside' is written below, with an arrow pointing to the infolding. The video then explains that this infolding is where respiration occurs, and the structure is called a mesosome. The text 'mesosomes' is written and linked to the infolding. The diagram shows the membrane folding inwards to form a complex, internal network.

  3. 5:00 – 10:00 05:00-10:00

    The explanation progresses to the function of the infolded membrane. The video states that the membrane folds inside to create a structure where respiration occurs, which is called a mesosome. It then introduces another type of infolding, where photosynthesis occurs, and this structure is called a thylakoid. The text 'thylakoid' is written and linked to a new, separate infolding structure. The video emphasizes that these structures are not organelles because they are not covered by a membrane, but are simply parts of the plasma membrane. The text 'it is outer membrane only' and 'it is a part of plasma membrane' is written to clarify this point.

  4. 10:00 – 11:56 10:00-11:56

    The video concludes by summarizing the key concepts. It reiterates that the infoldings of the plasma membrane, such as mesosomes and thylakoids, are not organelles because they are not enclosed by a separate membrane. The text 'No, it is not an organelle' is written to emphasize this. The video then contrasts this with eukaryotic cells, where organelles are membrane-bound. It also mentions that in plant cells, the vacuole plays the role of a lysosome. The final diagram shows the complete process of membrane infolding, with labels for mesosomes and thylakoids, and the text 'This is again part of plasma membrane infolding inside where photosynthesis occurs' is written.

The video provides a clear and logical explanation of the fundamental difference between prokaryotic and eukaryotic cells, focusing on the absence of membrane-bound organelles in prokaryotes. It uses a simple, step-by-step visual approach to demonstrate how the plasma membrane of a prokaryotic cell can infold to create internal structures for specific functions like respiration (mesosomes) and photosynthesis (thylakoids). The key takeaway is that these structures are not organelles because they lack a separate membrane, which is the defining characteristic of an organelle. This concept is reinforced by contrasting it with the role of the vacuole in plant cells, which performs a lysosomal function but is still not considered an organelle in the same way as in animal cells. The video effectively uses diagrams and annotations to make a complex biological concept accessible.

Loading lesson…