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Explain why living protozoa can be actively observed moving under Microscope X but observed alive under Microscope Y. State the algebraic formula used to estimate the size of a single cell. Calculate the average diameter of one plant cell in micrometers (µm).

Biology

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Answer

b

300 μm\text{300 } \mu\text{m}

Step-by-step solution

3 steps

Part a

Ili kukadiria ukubwa wa seli moja, fomula ya aljebra inayotumika ni

Ukubwa wa seli=Kipenyo cha eneo la kuonaIdadi ya seli zilizopangwa kwenye eneo la kuona\text{Ukubwa wa seli} = \frac{\text{Kipenyo cha eneo la kuona}}{\text{Idadi ya seli zilizopangwa kwenye eneo la kuona}}

Hii inaweza kuwakilishwa kama:

S=DNS = \frac{D}{N}

Ambapo:
SS ni ukubwa wa seli moja.
DD ni kipenyo cha eneo la kuona.
NN ni idadi ya seli zilizopangwa kwenye eneo la kuona.

Part b

300 μm\text{300 } \mu\text{m}

Kuhesabu kipenyo cha wastani cha seli moja ya mmea katika mikromita (μ\mum).

  1. Badilisha kipenyo cha eneo la kuona kutoka milimita (mm) kwenda mikromita (μ\mum).

    Tunajua kuwa 1 mm=1000 μm1 \text{ mm} = 1000 \text{ } \mu\text{m}.
    Kipenyo cha eneo la kuona = 3 mm3 \text{ mm}

    3 mm=3×1000 μm=3000 μm3 \text{ mm} = 3 \times 1000 \text{ } \mu\text{m} = 3000 \text{ } \mu\text{m}

  2. Tumia fomula ya kukadiria ukubwa wa seli.

    Idadi ya seli za mmea = 10
    Kipenyo cha wastani cha seli moja = Kipenyo cha eneo la kuonaIdadi ya seli\frac{\text{Kipenyo cha eneo la kuona}}{\text{Idadi ya seli}}

    Kipenyo cha wastani cha seli moja=3000 μm10\text{Kipenyo cha wastani cha seli moja} = \frac{3000 \text{ } \mu\text{m}}{10}

  3. Fanya hesabu.

    Kipenyo cha wastani cha seli moja=300 μm\text{Kipenyo cha wastani cha seli moja} = 300 \text{ } \mu\text{m}

    Kipenyo cha wastani cha seli moja ya mmea ni 300 μm\boxed{\text{300 } \mu\text{m}}.

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