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Here are FOUR stages in the PREPARATION of a microscope ilide to view some ONION cells. Which happens THIRD? Place the slide on the STAGE and set the microscope's OBJECTIVE lens initially to LOW POWER Carefully add a drop of IODINE dye to the slide Using TWEEZERS, peel off thin membrane from a small piece of onion and place it on a glass slide Starting with one edge touching the slide, drop a glass COVER SLIP over the onion by lowering it with a pin to AVOID AIR BUBBLES

Question

Here are FOUR stages in the PREPARATION of a microscope
ilide to view some ONION cells. Which happens THIRD?
Place the slide on the STAGE and set the
microscope's OBJECTIVE lens initially to
LOW POWER
Carefully add a drop of IODINE dye to the
slide
Using TWEEZERS, peel off thin
membrane from a small piece of onion
and place it on a glass slide
Starting with one edge touching the
slide, drop a glass COVER SLIP over the
onion by lowering it with a pin to AVOID
AIR BUBBLES

Here are FOUR stages in the PREPARATION of a microscope ilide to view some ONION cells. Which happens THIRD? Place the slide on the STAGE and set the microscope's OBJECTIVE lens initially to LOW POWER Carefully add a drop of IODINE dye to the slide Using TWEEZERS, peel off thin membrane from a small piece of onion and place it on a glass slide Starting with one edge touching the slide, drop a glass COVER SLIP over the onion by lowering it with a pin to AVOID AIR BUBBLES

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OswaldProfessional · Tutor for 6 years

Answer

<p> Starting with one edge touching the slide, drop a glass COVER SLIP over the onion by lowering it with a pin to AVOID AIR BUBBLES</p>

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<p> This question discusses the stages of preparing a microscope slide, specifically for onion cells. Four stages of the processes of microscope slide preparation usually follow this order:<br />1. Using tweezers, peel off a thin membrane from a small piece of onion and place it on a glass slide.<br />2. Carefully add a drop of iodine dye to the slide.<br />3. Starting with one edge touching the slide, drop a glass cover slip over the onion by lowering it with a pin to avoid air bubbles.<br />4. Place the slide on the stage and set the microscope's objective lens initially to low power. <br />Given that the question is pertaining to which occurs third, the correct option is the one where the glass cover slip is placed over the onion.</p>
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