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USPshnik [31]
2 years ago
8

Explain the steps that you would use to focus on a specimen under a compound light microscope.

Biology
1 answer:
Rashid [163]2 years ago
8 0

To start, move the objective lens to its lowest power setting. Place a slide on the stage with the label side up and the cover slip in the middle. You can only use the coarse focus knob when the power is low. If you can't see anything, move the slide a little while you look and focus. If nothing shows up, turn down the light and move the slide a little while you're looking and focusing. Once you're in focus on low power, move the slide to make the object of interest in the middle of it. Turn the objective to medium power and only change the fine focus. If you need to, turn the objective to high power and only adjust the fine focus.

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The two main sources of genetic variation are shuffling and
S_A_V [24]
Meiosis. Sexual recombination. Crossing over. Independent assortment. Mutations.
The two MAIN sources would be genetic(sexual) recombination and mutations. Mutations allow for genetic variation, while genetic recombination allows for genetic shuffling. :)
5 0
3 years ago
A research team needs an antibody that binds to a protein of interest so that protein expression can be monitored. They use epit
antiseptic1488 [7]

Answer:

C.The added epitope disrupts the function of the tagged protein

Explanation:

When an additional sequence is tagged to a protein to use comercial antibodies, there are several reasons why this procedure wouldn't work as expected (note that we're assuming the protein is being expressed but it's not possible to detect it).

For example, the sequence of nucleotide added to codify for the tagged epitope are removed during the RNA processing. In that case, the protein would be expressed without the epitope, so it would be impossible to localize it with the antibodies.

Also, it could be that the new epitope is affecting some way the protein folding, making it not functional. This way, it would be degraded by the cell so it wouldn't be detected.

Another possibility is that the epitope doesn't affects the protein folding nor its function, but during the folding ends up in a conformation that makes it inaccesible for the antibody.

In summary, the way as the possible answers to this question are shown, the correct option seems to be C:<em> The added epitope disrupts the function of the target protein.</em>

3 0
3 years ago
What do you think the term gene expression means?​
Ymorist [56]

Answer:

The term gene expression means the process by which the information encoded in our DNA is used to synthesize a functional product, such as a protein molecule or other cell structures.

Explanation:

6 0
2 years ago
What does the word “mendicant” mean? Why would groups like the Franciscans call themselves “mendicant?” (Site 1)
Olenka [21]

Answer:

Mendicant, member of any of several Roman Catholic religious orders who assumes a vow of poverty and supports himself or herself by work and charitable contributions. The mendicant orders surviving today are the four recognized by the Second Council of Lyon (1274): Dominicans, Franciscans, Augustinians (Augustinian Hermits), and Carmelites, as well as Trinitarians, Mercedarians, Servites, Minims, Hospitallers of St. John of God, and the Teutonic Order.

Explanation: Britannica

5 0
2 years ago
Read 2 more answers
A student wants to find out if the amount of bleach has an effect on stain removal.
Step2247 [10]

Answer:

The second option.

Explanation:

We're trying to test the amount of bleach that has an effect on the stain so that is the altered variable.

The 2nd option uses different amounts of bleach to clean the same amount of stain.

If you choose the other options, people can argue that the bigger stain would be harder to clean with one cup of bleach, whereas the small stain gets two cups or the other way around.

It's not an effective way to see if the amount of bleach has an effect on stain removal.

7 0
1 year ago
Read 2 more answers
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