Biology: Cell Structure I Nucleus Medical Media

Biology: Cell Structure I Nucleus Medical Media

Cells are the smallest living units of
an organism. All cells have three things in
common no matter what type of cell they are. All cells have a cell membrane which separates the
inside the cell from its environment, cytoplasm, which is a jelly-like fluid, and DNA which is the cell’s genetic
material. There are two broad categories of cells. The first category is eukaryotic cells. They have organelles which include the nucleus and other
special parts. Eukaryotic cells are more advanced,
complex cells such as those found in plants and
animals. The second category is prokaryotic
cells. They don’t have a nucleus or membrane
enclosed organelles. They do have genetic material but it’s
not contained within a nucleus. Prokaryotic cells are always one celled, or unicellular organisms, such as
bacteria. So what are organelles? Organelle means “little organ.” Organelles are the specialized parts of a cell that have unique jobs to perform. Let’s start with the nucleus, the
control center of the cell. The nucleus contains DNA or genetic
material. DNA dictates what the cell is going
to do and how it’s going to do it. Chromatin the tangled, spread out form of DNA
found inside the nuclear membrane. When a cell is ready to divide DNA condenses into structures known as
chromosomes. The nucleus also contains a nucleolus, which is a structure where ribosomes
are made. After ribosomes leave the nucleus they will have the important job of “synthesizing”, or making, proteins. Outside the nucleus the ribosomes and
the rest of the organelles float around in cytoplasm, which is the
jelly-like substance. Ribosomes may wander freely within
the cytoplasm or attach to the endoplasmic
reticulum, sometimes abbreviated as ER. There are two types of ER: rough ER has ribosomes attached to it and smooth ER doesn’t have
ribosomes attached to it. The endoplasmic reticulum is a membrane enclosed passageway for
transporting materials such as the proteins synthesized by
ribosomes. Proteins and other materials emerge from the endoplasmic reticulum in small vesicles where the Golgi apparatus, sometimes called the Golgi body receives them. As proteins move through the Golgi body
they’re customized into forms that the cell can use. The Golgi body does this by folding the
proteins into usable shapes. or adding other materials on to them such as lipids or carbohydrates Vacuoles are sac-like structures that store
different materials. Here, in this plant cell, the central vacuole stores water. Going back to the animal cell, you’ll see an organelle called a lysosome. Lysosomes are the garbage collectors that take in damaged or worn out cell parts. They are filled with enzymes that break
down this cellular debris. The mitochondrion in is an organelle
that is the powerhouse for both animal and plant cells. During a process called cellular respiration the mitochondria make ATP molecules that provide the energy for all the
cells activities. Cells that need more energy have more mitochondria. Meanwhile the cell maintains its shape through a cytoskeleton. The cytoskeleton includes the thread-like microfilaments which are made of protein and microtubules which are thin hollow tubes Some organisms such as plans that are photoautotrophic meaning they capture sunlight for energy have cells with an organelle called
a chloroplast. The chloroplast is where
photosynthesis happens It’s green because it has a green
pigment called chlorophyll. Plant cells also have a cell wall
outside of their cell membranes that shape, support, and protect the plant cell. Animal cells never have a cell wall There are many other unique
structures that only some cells have. Here are just a few. In humans, for example, the respiratory tract is lined with cells that have cilia. These are microscopic
hair-like projections that can move in waves. This feature helps trap inhaled particles in the air and expels them when you cough. Another unique feature in some cells is flagella. Some bacteria have flagella. A flagellum is like a little tail that
can help a cell move or propel itself. The only human cell that has a flagellum is a sperm cell. In summary remember: eukaryotic cells are plant and animal cells with a nucleus and membrane-enclosed organelles While prokaryotic cells are unicellular organisms without these things. All cells have a cell membrane, cytoplasm and genetic material. And even though only plant cells have
chloroplasts both plant and animal cells have mitochondria.

Dereck Turner

100 thoughts on “Biology: Cell Structure I Nucleus Medical Media

  1. Deepak Sorout says:

    It's very helpful video…

  2. Ija Lasia says:

    Thank you very much …this is so very helpfull for me….😊😊😊

  3. W H says:

    *Insert "Mitochondria is the powerhouse of a cell" memes here

  4. Camila M. says:

    Muito obrigada. É perfeito 🙏🤗🇧🇷

  5. gwapo miming says:

    ok study study study waaahhh!!!!!

  6. Vijayan Vijutty says:

    Thanks you

  7. how to says:

    wow, thanks, great work keep it up. you helped 10M people through this video and many more with your other videos, so, when you will have a doubt god will help you

  8. OneManArmy says:

    This pretty much sums up the whole chapter of ' Functioning Cell' in my thick textbook. omg

  9. saranya N&D says:

    tissues pathi full information in Tamil…plz

  10. Faizi Malik says:

    You taught me in 7 mins,that my teachers couldn't do in 2 years 😀

  11. mangesh wagh says:

    best video

  12. Anwarul Haque says:

    you have helped in understanding the concept of chromosomes

  13. Nelson Nnanyelugo says:

    identify cells found in multicellular organisms

  14. Muzaffer altınöz says:

    Thanks a lot :*

  15. Raven von Frankenstein says:

    I thought that all human cells have 23 chromosome pairs in their nucleus at all times, but you're saying that DNA floats around in the nucleus in discombobulated form and only congeals into chromosomes right before cell division? Did I get that right? If so, what happens to the chromosomes after division?

  16. الوائلي 98 says:


  17. Yuki Kys says:

    THANK YOUUU. We talk about this for 8hours haha and i didn't get anything. Glad you have this video!

  18. Santosh Dabhadkar says:


  19. BOSS 444 says:


  20. Joshua Williams says:

    All biology teachers should show this video to their students at least once while they teach this section. Most don't provide enough visual learning.

  21. Derek hi says:

    This animated quality is blockbuster worthy. I cannot believe the detail in not only shape and movement, but smoothness as well.

  22. UHFStation1 says:

    How many cells will the human body have over a life time? Assuming they all can only divide 60 times that give me 1,152,921,500,000,000,000, or 2 to the 60th. Is that a correct assumption?

  23. 0 subs with 0 vids says:

    Gl to pp having exams since pp spam comments about exams

  24. Suka Deva says:

    This is what will ingrain in our memory forever and unable to erase anymore. But is it really a real thing? not 100%…

  25. manish chauhan says:

    your video is really so cool!!

  26. Reuben Atlantis says:

    Whaaaat, where is cholesterol liquid? As always come on! !!!! Bla Bla get it right

  27. Quirky says:

    Sobs wondering how this will help me in life

  28. RobZoneFire says:

    You Summarized my entire semester of biology in 1 video, thanks a lot man!

  29. sahib singh labana says:

    Thx you are the best

  30. ItZangel!c_Jannah Gacha says:

    im learning this because its my lesson and im stil grade 5 wuich means im 10 years old because our school is advance

  31. Arlie Ferguson says:

    Great video. The only thing I feel is lacking is some kind of overall picture about how the cell manages to stay alive as a result of all these activities.

  32. Basavaraj Malagi says:

    Body structure very nice

  33. ZaFeRos Great says:

    Thx you 💗

  34. surbhi singh says:

    Please prey for me to be a successful person

  35. Anshu kumari says:

    Thanku a lot👏

  36. BT I says:

    I love it


    This explanation is better than my teacher's explanation!! Great animation 🙂

  38. Sushmita Banerjee says:

    Wonderful !!

  39. Amir Shah says:

    Nice video

  40. Rasheed Kallil says:

    Biology very easy subject

  41. Rasheed Kallil says:

    Biology very easy subject

  42. Ahmed Khalifa says:

    Glory be to Allah

  43. Sajjad Kamran says:

    wow wonderful video. this helped me a lot

  44. SAN PSY says:

    Thankyou so much ! more detailed , easy to understand
    my C.I took a week to explained this nucleus :3

  45. Hakim Daren says:

    Or videos upload karo

  46. Sans UNDERTALEGODLY says:

    You forgot The VACUOLES

  47. M Zubair says:

    Very very famous vidio

  48. Akshata Sutar says:

    Such a nice information

  49. Akshata Sutar says:

    Such a nice information

  50. Huma Chandni says:

    Very nice
    I have understood it in first time before readind the lesson

  51. how to says:

    please make for tissue

  52. Мухаммед Саад says:

    The best channel and best way to teach the others, thank you so much

  53. djb Djamel says:

    This is your video

  54. ADHITYA K N says:

    If only I were taught like this in school!
    Such a wonderful and simple explanation with perfect visuals. Great job!

  55. Sirajudheen Sirajudheen says:


  56. 一起来滑稽 says:

    Thanks for the subtitle! It's really great!

  57. Sreechaithanya Neelakandan says:

    Malayalees aarum ille????😢

  58. Bindu Singh says:

    Thank you for your help and pleased,,

  59. Felix Silwimba says:

    Good videos for revision. Learning has been made easy.

  60. suleman Malik says:

    Love this man ✌💪❤😐

  61. MsHas1973 says:

    Wow it's amazing

  62. Brijendra Rai says:

    Biology is the worst subject

  63. Aamna Naveed says:

    It's amazing

  64. Himanshu prakash says:

    Knuwledgeful video

  65. Huynh Phuong Thanh Nguyen says:

    it is much easier to follow and understand than my lecturers. Love it!

  66. Natan Ys says:

    Waw keren….

  67. Chong Kab Lee says:

    한글 해석이 되어 보기 아주 좋습니다

  68. Palak Singh says:

    Very useful for me .. thank you .. please upload more videos about these

  69. Palak Singh says:

    It's much easier for us to understand thanks a lot

  70. prashant ray says:

    It is really a very very good video as well as animation I really understood lot from this 7 min video that I never understood in my Class

  71. Kanchi Jha says:

    Thank you!!

  72. Forgotten Viking says:

    Just read 30 long pages about organelles in my AP Bio book and did not learn a thing. Watched this video and I can name the different organelles.

  73. jennifer vides says:

    I always thought we were prokaryotes because we were PROS 💀

  74. Steven Wiederholt says:

    Remember now, this all happened by accident!

  75. Pawan Pawan says:

    Nice video

  76. Niruni says:


  77. Jessica Mulenga says:

    Iv really learnt alot. I never understand what my lecturer says

  78. Tia Green says:

    very help full tnx

  79. K playz says:

    3D editing lv.99999999

  80. Griffen Smith says:


  81. rainbow chaser says:

    I’m a homosexual

  82. Sushobhit Yadav 33 says:

    bhut acche se btaya hai sb . just like my bio teacher☺☺

  83. fulin ming says:

    thank you so much

  84. muqsood ahmad says:

    Hey!!! what a method of explaining. I love it 😍

  85. Ruchita Solanki says:

    Your animation is great

  86. Krystel De Leon says:

    stream DNA by BTS

  87. Jeetlal Verma says:


  88. Guru Hiremath says:


  89. Farhat Fakhar says:


  90. Mar Anthony Melegrito says:

    Hi. This video can help me to learn more. Thank you for this video. Do you have any document form of this video?

  91. Angel lucha says:

    It is nice I'm learning to speak English at actually I'm student of biology I'm from Mexico and how I understand those topics I can also understand a lit English ,thanks so much for the video that is very good 👍

  92. Sanath S says:

    Best of luck to all for onam exam

  93. Anonymous Amasawa says:

    Thanks a lot of for the animation,😊 was so confused what the teacher says sounds complicated without your animation

  94. Nerdy Guy says:


    Sounds like the name of a Minecraft ender mob

    Should be in 1.15 and called 'Enderplasm'

  95. NXT GEN BTC COURSE says:

    what about dead cell's cytoplasm

  96. Amtul Tahir says:

    Your explaination is better than my teacher who is a doctor and highly qualified from america. ❤

  97. Ibad Siddiqui says:

    Nice vidio it has alot of education
    I will share this to my cousins

  98. ashish Shukla says:

    Hindi me bataye

  99. Viktor Santacruz says:

    Like si vienes por la clase de biología XD

  100. Olga Garcell says:

    doesn't both of them have ribosome as well?

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