Question

Obtain two closed microtubes. Label them with your group's name, then label one "+DNA" and the other "-DNA." Put both tubes in the microtube holder/float.

Short answer

Label two microtubes with your group's name, '+DNA,' and '-DNA,' then place them in the holder.

Step-by-step solution

Obtain Microtubes

Get two closed microtubes from the laboratory supplies.

Label Microtubes with Group Name

Write your group's name on each of the microtubes using a permanent marker.

Label One Tube '+DNA'

On one of the labeled microtubes, add '+DNA' next to your group's name.

Label the Other Tube '-DNA'

On the other labeled microtube, add '-DNA' next to your group's name.

Place Tubes in Holder

Put both labeled microtubes in the microtube holder or float.

Key concepts

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Microbiology laboratory practices are essential for maintaining accuracy and safety in experiments. When labeling microtubes, it's crucial to follow a systematic approach. Start by obtaining the necessary microtubes from the lab supplies.
Next, clearly write your group's name on each tube using a permanent marker. This ensures that your samples are easily identifiable.
Proper labeling is a key step to prevent mix-ups. On one tube, write '+DNA', and on the other, write '-DNA'. Place both labeled tubes in a microtube holder or float.
Using a holder prevents them from rolling or getting misplaced. Following these procedures helps ensure experimental results are accurate and reliable.

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Handling DNA in the laboratory requires precision and care to avoid contamination or degradation. DNA samples are often fragile, so use sterile equipment.
Always wear gloves to prevent contamination from skin oils or other contaminants. Handle tubes carefully to avoid introducing foreign DNA.
When labeling tubes, ensure the text is legible and does not smudge. Permanent markers are ideal for this purpose.
Labeling with '+DNA' and '-DNA' helps distinguish between samples that contain DNA and those that do not.
Consistent and clear labeling aids in organizing and tracking samples throughout the experiment.

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Following laboratory safety protocols is fundamental in any lab setting. Always wear appropriate personal protective equipment (PPE), such as gloves and lab coats.
This helps protect you from hazardous materials and prevents sample contamination. Use a permanent marker to label microtubes, as these labels are less likely to fade or smear.
Ensure all work surfaces are clean before starting your experiment to maintain a sterile environment.
Keep the work area organized and free of clutter to reduce the risk of accidents.
Place labeled microtubes in a holder immediately to prevent them from rolling off or getting lost.
By adhering to these safety protocols, you help create a safe and efficient lab environment.