Size Of Specimens
Bayani Gaba-gaba
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.
Manufura
- 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)
Takardar Darasi
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Nazarin Darasi
Barka da kammala darasi akan Size Of Specimens. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- 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
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