Chapter 1.2 - Micrometry and Magnification | Cambridge A-Level 9700 Biology

behlogy | Cambridge A Level 9700 Biology

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Based on the NEW! 2022-2024 syllabus
Cambridge Assessment International Education
9700 AS Biology
Full Chapter 1 playlist:
• Chapter 1 - Cell Struc...
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11 июл 2022

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Комментарии : 39

@munirsultan2887 Год назад

Mam I think that the "actual length" for the egg of Aedes mosquito was not 200nm, It was 700nm because we had to use the scale given to measure the actual length. The line representing 200 nm was 12mm by length and the image was 42 mm and by calculation we know that is 700nm so magnification was (42×10times6)÷700

@behlogy Год назад

Hi so the answer for magnification would differ based on your screen! On mine, the image length of the scale bar is 42mm, not 12mm, bcs I have a big screen! The question asked for magnification only, the actual length of the mosquito larvae is irrelevant.

@munirsultan2887 Год назад

Oh ok mam i realize that now

@x._.y6894 Год назад

Thankyou so so much. I really can't thankyou enough. No way i was going to understand this topic myself. You are god sent. I am a private candidate for As level and I don't receive any kind of tution. You just saved my Biology. Thanks again❤️ May God bless you.

@alishbaahmad2613 Год назад

I’m a private candidate too. If you could share some more resources or video links for bio chem or phys that would be helpful thanks.

@voyage-of-tranquility 3 месяца назад

@@alishbaahmad2613 etphysics is the best for physics! That channel alone is enough for physics. For chemistry, I recomment allery chemstry's crash course playlist.

@fwk686 Год назад

Thankyou so so much. You literally teach better than my teacher. I love you 💓

@saimajabeen1410 Год назад

I understood this topic very well after watching you video.You are an amazing teacher

@idkstephanie1653 Год назад

Thank you ma I'm so grateful

@aaryapandey4789 Год назад

I am going to start As level soon thank you for your help I have done igcse and is quite easy for me to understand thank you for making these videos

@MarinHan-du9jx 2 месяца назад

Hi mam am really greatful , u are amazing coz u have made me understand these things

@nickymajoka1197 Год назад

Thank yu maaam`♡

@ahmadrashidstanikzai2020 10 месяцев назад

Tnx u mum❤

@RandomMeathead Год назад

You calculated the magnification in nm instead of micro meters so are we suppose to calculate the magnification based on the unit provided for the image size or actual size or is it suppose to be in micro meter only?

@behlogy Год назад

For magnification. As long as top and bottom (aka Image/Actual) units are the same before division, all good.

@RandomMeathead Год назад

@@behlogy So it doesn't matter until all the units of calculations are same thus the answer can be in any unit we calculate in that's convenient

@rifannizar8629 Год назад

do we have to know about the microscope in detail for cambridge As level

@behlogy Год назад

Yes! You need to know how to use one as well.

@WafaMustafa-gb6rx 3 месяца назад

Hi! Great video i learned a lot about bio practicals from your video despite never touching a microscope in my life 😛 I have a question, I am a private candidate so i have no lab experince so do they provide us with a mm ruler to measure the image on the paper ? Cause i have a cm ruler. Sorry i have no knowledge of practicals 😝

@behlogy 3 месяца назад

Haha all cm rulers have mm markings.... But yes they do provide.

@WafaMustafa-gb6rx 3 месяца назад

@behlogy thank you, you are so sweet ❤ Also thanks for not making me feel dumb 😂❤

@dilutesodiumhydroxide3570 2 месяца назад

Maam when i write my answer in micrometer is it necessary to always give my answer in 2 decimal place ? In some questions that you attempted in this video you gave yoyr answer in 2 dp but in some parts you gave your answer in 0 dp

@behlogy 2 месяца назад

Millimeter in whole number! The rest, no rules. Unless specified in question.

@fatma-yz7dv 5 месяцев назад

First thanks for your help , you make it easy 🙏 Second I wanted to ask about level A , is it a high school subject ? Because my foundation year in college depends on this level , I am quite curious to know more cause im not in western country Last thing is there level b or a higher level after completing this level ?

@behlogy 5 месяцев назад

It's a sixth form / year 12 / foundation / pre-university subject. So same as your level :) But in terms of difficulty, i think my first year in university was easier than A - Levels... 😅😂

@accuratesoup3486 Год назад

Thanks for the video. Will the labelled microscope be tested in the exam (is it in the syllabus)?

@behlogy Год назад

Not really but they do assume you know what the terms are referring to already

@lab.independenciaindepende6082 4 месяца назад

LO QUE PASA ES QUE NO DICEN QUE OCULAR USA Y QUE OBJETIVO

@behlogy 4 месяца назад

Hellooo, it's usually in the question or the diagram. and if it isnt there , means it doesnt matter.

@abdullahshakeel8887 Год назад

i didnt understood why at 15 : 37 we multiplied 10 with 10 to get 100

@behlogy Год назад

1 div (on the stage um) = 10um So 10 div = 10*10um

@_K_F_D_ Год назад

This was very helpful but I’m quite confused on why she guessed 11 on the EPG please explain 10:55

@behlogy Год назад

It's btwn line 10 and 20, but a little more. In CIE, epg is in whole number so i wouldnt count it as 10.5, i will round it to 11EPG.

@_K_F_D_ 10 месяцев назад

I still don’t get it (CIE? )

@sarahsajid1807 8 месяцев назад

@@_K_F_D_cie is the name of the Cambridge examination :)

@dominiquesnyman468 Год назад

Am I understanding something wrong or shouldn't you have converted the 200nm scale bar to micrometers as well? Because you converted the 42 mm to micrometer and divided it by the 200nm to get the magnification. Shouldn't the units all be the same?

@behlogy Год назад

Refer to the pinned comment and my replies to see if it makes sense!

@MarinHan-du9jx 2 месяца назад

Hi mam am really greatful , u are amazing coz u have made me understand these things