Microbes Friend and Foe in One Shot | Biology - Class 8th | Umang | Physics Wallah
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- Опубликовано: 14 янв 2022
- 📝 For complete notes of Lectures, visit Umang Batch in the Batch Section of PhysicsWallah App/Website.
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▶️Complete CLASS 8TH - SCIENCE ONE SHOT Lectures - • Science - Class 8th NCERT
In this lecture of Umang batch, BhagyaShree ma'am is going to teach you the chapter-Microbes Friend and foe.
Topics covered in this lecture are-
•What are microbes?
•Different categories of microbes
•Friendly microbes
•Vaccination
•Microbes in enviroment
•Soil fertility
•Diseases
•Vectors
•Pasteurization
•Nitrogen Fixation
There are many other important chapters that we are going to cover in upcoming videos for class 8. Stay tuned with PhysicsWallah Foundation.
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🔴 Details about the batch -
• Recorded Lectures for Class 8th Students.
• PDF Notes of each Lecture will be available on the PW App.
• Weekly Lecture Planner will be uploaded on PW Foundation Community Page.
• Classes will start from 10th January and we will cover the whole syllabus by 10th March.
🎦 Eight Lectures per week will be uploaded.
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#Science #Class8 #Umang
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Who score 90% above in class 7 like this coment
I
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28:26 Fermentation : The process of conversion of sugar into alcohol is known as fermentation.
Mam told the definition of class 10th
@@RHaz-vo6hv no, It is science awareness book
In
No,
Fermentation: The process of Turning sugar into Alcohol in the absence of oxygen. By the action of yeast is Called Fermentation....
You missed Some Line bro
Yeah, But in the absence of oxygen and energy is also formed in this process.
It's the best platform to learn anything
43:16 it's is most important channel for me and all class students ❤❤🎉🎉
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Hi hat
Aspergillus produces only citric acid not acetic acid. Acetic acid is produced with the help of a microbe called acetobacter
Right
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Kitne tez Bache hai
Dharti par
@@user-mv6xw6cb1b Sahi baat hai
@@user-mv6xw6cb1b Bhai ye toh logic Wali bat hai aspergillus ek fungi hai or voh acetic acid nai produce Kar Skta kyuki use bas acetobacter hi produce krta hai acetic acid ko or acetorbacter ek bacteria hai toh its simple
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Mera NCERT ka book h Science ka... Or 2nd chapter ka naam"Microorganisms:Friend and Foe" Hh... Or is video me chapter ka naam"Microbes:Friend and Foe"Hh ... Kya ye dono same haii??
Hi.
Yes Microorganisms and Microbes mean the same.
Yeh dono same hi hai.
38:06
Kon kon 8th ka final syllabus dakh ka ider aya ha 😂
Ma na to nahi socha tha ke ya aya ga
Bhai science ke exam ke 1din phele aaye h padh ne😎😎😎😎
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😂 tomorrow is my science exam
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Thank you very much.
Ma'am according to NCERT - The milk is heated to about 70 degree celcius for 15 to 30 sec and then suddenly chilled and stored. Called PASTEURISATION
Yeah!!
I was confused because she said for 700 degree celcius
I was too confused about it
Yes bro you are right
yes
fermentation is the process of converting sugar into alchol 28:29
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Best teacher of Biology
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Hi PW, I have a doubt. If lactose is a sugar, then why is curd sour sometimes?🤔🤔
Yes
Have you heard of lactic acid
How are you in 8th
Because when we leave curd for long time more microorganisms get reproduce as there is more reproduction of lactobacillus curd tastes sour
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34:07 I was wearing headphones 🙂
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My sister always read from physics wallah and I thought that when I will be in class 9th then I also read from physics wallah but today I suddenly found that physics wallah also teach for class 8... This video lecture is very helpful for me....Thank you mam.....😊
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1:14:22 This is for all students.
The actual temperature is 70°C. It looks like there was a typo there but the actual temp is 70°C which is also written in our NCERT.
Thank you.
Thank you! :D
thank you bro
I was also confused 😅😅 thanks❤
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Yes I am seen this word 😄
Who got good marks after watching this video.
my exam is tommorow
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What is the difference between vector and carriers ???
Vectors are the insects which the bacteria has entered their body then they send by their mouth by biting and carriers are those which carries bacteria or any mico organisms by their legs by wandering from mud to food
Thank you mam
I appreciate your intelligence and way of teaching, It helped me a lot but i think it would be better if the chapters are taught in a more conceptual way including definition and extra information as now days competition among students is high i, e why it will help us more, to gain knowledge about upcoming topics
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1:14:20mam it is hotted at 70 degree Celsius not at 700 degree Celsius
700 degree me to dud Gayab he ho jayega
Very nice mam TQ for this video and
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Doughts was funny 😂😂
Mam virus bhi microrangims hai
Thankyou so much mam for you best explanation ☺
please write little smaller explanation is very excellent thank you very much
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Agree
Didi * I studied hoga
@@priyanshujha9827 hoga....?????
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Study with full of fun 🎉
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Ed
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Paramoecium, Euglena, Amoeba and Spirogyra is also part of microorganisms
PROTOZOA
The first three are protozoan which mam mentioned and spirogyra is a fungi which also she mentioned!
@@uttkarshsingh359 algae*
Hi
Paramoecium,euglena and amoeba are protozoa and spirogyra is an algae 👀
Mam, you are very good teacher and hat we teach very nice 👌
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Learn some grammar dear!
Maths sir joined the chat
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1:24:44 was wearing earphone
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Ma'am is amazing ♥️♥️
1:24:43 not at it, for sure😊
the process of conversing of sugar into alchol is known as fermentation
Mam corona has a use as it helped us in our exam time
There is a very tiny mistake in this video. In pasteurization milk is heated to about 70 degree Celsius not 700 degree Celsius.
Other wise the explanation is great mam, you cleared my all doubts😊
😊
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My board exams are in march um preparing frm today tysm mam
Thanks ma'am 😊
I love this channel to watch you clear all of my doubt and I am the topper of my class 💗
Woahh niceee keep it up topper ! 😉 Best wishes
Wow
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Mam microbes earth ke inner core me hota hai ya nahi
Mam l have a boubt 😮 that you told that microbes live every where and you also told that they also leave in harsh conditions where heigh temperatures but mam but mam when we learned the topic of pasteurization there mention that when we heat milk at 80 degree Celsius all harm full bacteria are die due to heat then how you can say that they also leave in 🌋 l thought it is not possible 🙆 so ,l requested you to please provide me this question answered ❤❤❤❤
When the milk once got hot then they kill but after sometime they again affect the milk because it's get cold because bacteria move one place to another
😅
@@mamtamaurya9379 g
On boiling milk only harmful bacteria are killed . But not helpful bacteria . They are still present in milk and same for volcano 🌋
Thanks for sharing your teaching ability thankyou again and again....
Very good channel for study 😁😁
1:14:21 it is not 700 degree celsius its upto 70 degree Celsius
33:20 best part of Alexander
Very very thank you mam 😊❤️😊
Amazing 👌👌
Yep
Mam what ever you write on the board i write it too its just like notes.
It helps in my exams. 😊
Mam vector ko koi disease kyon nahin hota Hai
Thanks ma'am because This video lecture is very helpful me🥰
BEST Teacher I Have Ever Seen In My LIFE Impressive Handwriting Great DaY💙💙💙💙💙💙💙💙
Thankyou ma'am you are the best 🎉🎉
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Bat karogi
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Tu apana nam papa hi pari tak Google acccount 😀 1:10:37
अच्छा maam
15:17 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
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4 improving us
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fermentation is the process of converting sugar into alchol
Exactly my book also says
Dettol kills 99% of all germs that 1% of germs will be : you killed my all parents and friends why you leave me 😢😢😢😢😡😭😭...
Legends are watching this video 1 night before exam😂😂😪
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Yes
Thank you mam for teaching this chapter
Explains the curd formations?
Ans: Milk is converted into curd or yogurt by the process of fermentation.The curd forms because of the chemical reaction between the lactica acids bacteria and casein.
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ma'am firstly 2nd term syllabus should to be completed. with the help of all master teachers rom "UMANG" batch.
No bro
Oh
Physics wallah is always helpful for students👏
Mam aap bahut acha padhati hai hamare teacher se bahut acha. mam thankyou
1:14:15 its not 700°C its 70°C...