Size Of Specimens
Gbogbo ọrọ náà
A drawing of a cell might be the size of your hand, yet the real cell is far too small to see. How do biologists describe these sizes accurately? They use magnification: the number of times bigger the image is than the real object. One simple formula links the three quantities, and rearranging it lets you find any one from the other two.
In this lesson you will learn and use the magnification formula, work carefully with units in millimetres, and, at Extended level, convert between millimetres and micrometres so you can handle the tiny sizes of cells and organelles with confidence.
Ebumnobi
- State and use the formula: magnification = image size ÷ actual size
- Calculate magnification and size of biological specimens using millimetres as units
- [Supplement] Convert measurements between millimetres (mm) and micrometres (μm)
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Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
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Akwụkwọ Ọmụmụ
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Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Size Of Specimens. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- To calculate the magnification of a drawing, which division do you carry out? A. real size divided by drawing size B. drawing size divided by real size C. drawing size divided by eyepiece value D. real size divided by objective value Answer: B
- A drawing is 50 mm wide; the real object is 0.5 mm wide. The magnification is: A. x10 B. x25 C. x100 D. x500 Answer: C
- How many micrometres are there in 1 millimetre? A. 10 B. 100 C. 1000 D. 1000000 Answer: C
- An image is x200 and 40 mm wide. The actual size is: A. 0.2 mm B. 0.5 mm C. 5 mm D. 8000 mm Answer: A
- Magnification is measured in: A. millimetres B. micrometres C. no units D. centimetres Answer: C
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Mụtakwuo ihe site na isi mmalite mepere emepe
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Akụkụ akwụkwọ
Measurements
Explain the process of measurement
"Chemistry: Measurements" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/chemistry/pages/1-4-measurements. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
Ndị otu ndị ọzọ bipụtara ha n'okpuru ikike mepere emepe, anyị na-ekele ha dị ka ha si chọọ. Njikọ na-emepe saịtị ha.
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Size Of Specimens? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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