Udemy
    •  
    •  
    •  
    •  
    •  
    •  
    •  
    •  
Subscribe
Turn what you know into an opportunity and reach millions around the world.
Learn More
Your cart is empty.
Keep shopping
Gcse/Igcse biology 1
Rating: 4.5 out of 5(1 rating)
8 students

Gcse/Igcse biology 1

Gcse/Igcse cell biology
Created byOladimeji AKerele (Biology video lectures)
Last updated 12/2023
English
English [Auto],

What you'll learn

  • Simplifying a cell structure for easy assimilation.
  • Understanding cell specialisation.
  • The basic concept of cell
  • The structure and functions of cell organelles
  • How cell divides
  • Transport of substances across the cell

Course content

4 sections • 49 lectures • 7h 13m total length

  • Course outline4:50

    Explore GCSE/IGCSE biology core concepts of cell structure, division, and transport, compare eukaryotic and prokaryotic cells, study microscopy, diffusion, osmosis, active transport, and stem cell applications.

  • Introduction into structure of the cell6:49

    Identify the cell as the basic unit of life, compare eukaryotic and prokaryotic cells, and overview universal structures—cell membrane, cytoplasm, genetic material, and ribosomes.

  • Prokaryotes versus eukaryotes9:52

    Compare prokaryotes and eukaryotes by their nuclei and plasmids. Prokaryotes lack a true nucleus and have a peptidoglycan cell wall, while eukaryotes have a membrane-bound nucleus.

  • Animals and plants cells8:48

    Compare plant and animal cells: both are eukaryotic and share nucleus, ribosomes, mitochondria, and cell membrane; plant cells have cellulose cell wall, permanent vacuole, and chloroplasts with chlorophyll for photosynthesis.

  • Solved questions on Plants and Animal cells8:26

    Explore plant, animal, and bacterial cells by identifying key organelles such as the cell membrane, nucleus, mitochondrion, ribosome, and chloroplast, and compare plant and bacterial cell walls (cellulose vs peptidoglycan).

  • Introduction into Cell Specialisation8:51

    Explore how cell differentiation leads to unique cell structures and functions. See how stem cells give rise to skin, nerve, and muscle cells and how specialization enables specific roles.

  • Nerve cells as specialised cell7:29

    Analyze the neuron as a nerve cell specialized for rapid signaling. Learn its cell body, dendrites, axon, and myelin sheath that insulates and speeds impulse transmission.

  • Sperm cells as a specialised cell4:46

    Explore how sperm cells specialize for fertilization, with an acrosome containing proteolytic enzymes, a mitochondria-rich midpiece, a tail with flagellum for swimming, and 23 chromosomes due to meiosis.

  • Muscle as a specialised cell4:03

    Examines how muscle cells contract and relax across skeletal, smooth, and cardiac types, powered by actin and myosin filaments, abundant mitochondria, and fused multinucleated skeletal fibers for coordinated contraction.

  • Ciliated epithelial cells as a specialised cell3:39

    Cilia-bearing epithelial cells line the trachea, with goblet cells secreting mucus to trap dust and bacteria, and their cilia beat to clear debris and protect the lungs.

  • Root hair cells as a specialised cell6:39

    Root hair cells are specialized for absorbing water and minerals from soil. They use osmosis for water uptake and mitochondria-powered active transport for minerals.

  • Solved questions on specialised cells9:07

    Explore solved gcse/igcse biology questions on specialised cells, including xylem and effluent cells. Learn how differentiation and organelles support functions with examples like nerve cells, ciliated cells, chloroplasts, and mitochondria.

  • Xylem and phloem8:14

    Discover how xylem transports water and minerals upward through dead, lignified tubes, while phloem distributes sugars like sucrose via living sieve tubes with companion cells, aided by translocation.

  • Question on parts of Microscope3:05

    Engage in an interactive exercise to identify microscope parts, including the eyepiece, diopter adjustment, nosepiece, objective lenses, stage clips, stage, condenser, diaphragm, light source, coarse and fine knobs, and switch.

  • Microscopy 110:15

    Explore the light microscope's parts and operation, from eyepiece and nose piece to objective lenses, stage, diaphragm, condenser, and illumination, with rough and fine focus adjustments.

  • LIGHT AND ELECTRON MICROSCOPE6:52

    Compare light and electron microscopes: light uses lenses and iodine/methylene blue stains to reveal nuclei and chloroplasts; electron microscopes achieve higher resolution with electron beams.

  • Calculating magnification in light microscope8:23

    Calculate magnification using image size divided by actual size, and convert units between millimeters, micrometers, and nanometers to keep measurements consistent.

  • Solved questions on microscopy7:11

    Solve microscopy questions by calculating the actual size from image and magnification, convert units between millimeters and micrometers, and explore electron microscope advantages and drawbacks, including expense and low resolution.

  • Binary fission in Bacteria8:38

    Explore how bacteria divide by binary fission, including chromosome and plasmid replication, cell wall formation, and the conditions that maximize growth.

  • Cheeks and onions cells underneath the microscope.14:05

    Using a light microscope, observe, draw, and label cheek (animal) and onion (plant) cells; prepare slides, stain with methylene blue and iodine, adjust magnification, and sketch to scale.

  • Culturing of microorganisms.6:11

    Learn how to culture microorganisms in a nutrient medium using a petri dish, inoculating loop, and sterile techniques to test antibiotics and disinfectants at about 25 c.

Requirements

  • Readiness for learning
  • Good internet connection
  • A good mobile phone or a computer or tablet or laptop
  • Writing materials to make note

Description

Every organism that ever evolved, started from a simple unicellular structure which can be regarded as a living entity

Biology as a field is aimed at studying organisms and lives at different levels. This ranges from the simple unicellular organism such as, amoeba, bacteria to the most advanced organisms such as humans, elephant etc

This course is aimed at making students understand the basic concept of cell, as well as its structures and it functions..

The importance of cell cannot be overemphasized, be it unicellular organism or multicellular organism, every organism is made up of cells. Cell is the basic structural and functional unit of life.

In this course we shall be answering the following questions:

  • What are the structural differences between prokaryotic cells and eukaryotic cells?

  • Organelles unique to plant cells?

  • Why should a plant absorb mineral ions by active transport and not by diffusion?

  • Why the need for cell differentiation and cell specialisation?

  • What are the advantages of stem cells to humanity?

  • What is the advantage of electron microscope over light microscope?

In this course we shall be discussing:

  1. Cell structure

  2. Cell organelles all subcellular structures

  3. Similarities and differences in plant and animal cells to stop

  4. We shall be looking at cell division

  5. Differences between prokaryotic and eukaryotic cells

  6. Cell differentiation as well as specialisation.

  7. Introduction into microscopy, as well as different types of microscopes

  8. How to calculate magnification of a light microscope

  9. Culturing of microorganisms.

  10. How to use a light microscope to examine an onion cell and the cheek cell

  11. Transport across cell membrane using diffusion, osmosis active transport.

  12. Going over some essential experiments

  13. You shall be serving past questions on every segments, and lots more

Who this course is for:

  • Parents to students writing GCSE & IGCSE
  • Biology teachers looking to add more knowledge
  • Beginners on Cell biology

Report abuse