GCSE Biology - Pyramids of Biomass #87

This video covers:
- The idea that biomass is just the mass of living organisms
- Pyramids of biomass show the amount of biomass at each trophic level of a food chain
- Why the amount of biomass decreases as you go up the food chain
- How to calculate the efficiency of biomass transfer between levels in a food chain
Exam board specific info:
AQA - Separate/triple science only
IGCSE Edexcel - Everything is relevant to your course! But you also need to know about pyramids of number and energy, which are very similar.
Edexcel - Separate/triple science only
OCR 21st Century - Separate/triple science only
OCR Gateway - Separate/triple science only
Maths Playlist:
• GCSE Maths (9-1)
GCSE Chemistry playlist:
• GCSE Chemistry - Atoms...
GCSE Biology Playlist:
• Video
GCSE Physics Playlist:
• Video

[@michaelroberts4303]

I really can't begin to express my gratitude to you. I feel like I owe you. I had ten days to revise for a biology GCSE equivalency test which is an entry requirement for my university and I spent the whole 10 days binge watching your videos and I passed with 83%. This channel was literally my only resource and you've changed the course of my life. The words thank you seem too small. But thank you.

[@Cognitoedu]

Really a pleasure to read this! Well done on such good results, and thanks for letting us know!

[@bolaf9]

This gives me hope as I’m going to sit mine in November. Who did you take your test with if I may ask?

[@michaelroberts4303]

@@bolaf9 It was this one www.equivalencytesting.com/science-biology/ and it wasn't too difficult so don't stress! Everything covered in these tutorials was in the exam. Good luck!

[@bolaf9]

Michael Roberts thank you so much. That’s the same one I’m doing. I’m just gonna revise everything on the syllabus

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I hope you continue to add more videos (beyond GCSE coverage and covers all Biology) :) You got the perfect length, pacing and content of your videos that students can absorb. I hope you also add some practice questions as it enhances stickiness of the learnings as well as some sub-playlists (e.g., DNA, Macromolecules, etc) Thankyou very much for wonderful free content!

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[@Cognitoedu]

Thanks melanin, we hope to see them 😊

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Alisha Devi same mate

[@Cognitoedu]

If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform: cognitoedu.org/coursesubtopic/b2-gcse-aqa-h-t_10.06 - it's totally free, and has been built to make learning and revision as easy as possible. The main features are:
- Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown.
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Amadeus & Tom

[@l-s9245]

I finally understood this, thank you so much.

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3years later ther's me🎉😂😂

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these vids are really helpful.

[@satoyoshitakahashi2144]

Thank you so much sir. You made my IGCSE amazing!

[@Cognitoedu]

Ah thanks Satoyoshi! Glad we could help 👍

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Thanks sir for this amazing video ...somewhat helpful 😊😊 love from India sir🙏🙏

[@karousel3099]

im having a test tomorrow, wish me luck! and thanks for the videoo

[@Cognitoedu]

Good luck!

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Hi, do you illustrate these yourself? Sorry if it sounds unintelligent of me, and also, your videos help me soooo much, thank youuuu!

[@Cognitoedu]

Hi Bernice and thankyou! Yep, all of our illustrations are done by Tom, our animator 🙌

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[@kirrans101]

do these videos cover all of the specfication or only most of it? just asking because I'm wondering whether this is all the content necessary for 9-1

[@Cognitoedu]

Hey they cover almost all of it - but there are a few items, such as the practicals, that we don’t cover. To be 100% sure - get the specification for your exam board and then make a note of any topics not covered in the playlist :)

[@kirrans101]

@@Cognitoedu got it, thanks so much! oh, one last thing, does this cover higher content (triple) or just combined?

[@Cognitoedu]

We cover triple and combined! Most of the videos have details about what content is triple/combined in the description - though be aware some of the older ones don’t have that info, so you’ll have to check those :)

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Our pleasure! 😊

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[@jimmysinclair1191]

Is it the 10% of the relative mass that is transferred or is it just 10% of the energy which is transferred?

[@maplekong7790]

I'm not particularly sure, but I think your best bet would probably just be relative mass/biomass. Hope this helps a bit, sorry for not being able to give a definite answer

[@jimmysinclair1191]

@@maplekong7790 That's alright, thanks anyways mate

[@ImBobtheHampter]

I learned lot in this video

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[@lovisaoversidestarstable6116]

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Does this gives answer to the q tha
How much energy is consumed 🙄

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[@Cognitoedu]

Hi Muhammad, we do both, for biology you'll find the triple science subjects at the end of the playlist 👍

[@MuhammadAli-ft6pk]

@@Cognitoedu thanks so much. Also how about chemistry

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science gang check

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[@IMF-bw9hm]

this video sounds normal at 1.25
speed

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Anyone studying this in 7th grade??

[@savagex_2008]

@Danica Cates ?