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Effectus [21]
3 years ago
8

How do volcanoes form at B?

Biology
1 answer:
ivolga24 [154]3 years ago
4 0

Answer: B is called Ocean-Continent Convergence. The subducting plate causes melting in the mantle above the plate. The magma rises and erupts, creating volcanoes.

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HELP!! DNA was isolated from water samples taken from six different sites. This gel
VladimirAG [237]

After running DNA in a gel, bands of different sizes and species might appear. <em>Scientists know silver carp are at North Shore site 1 because one of the bands in lane 1 matches a band in the positive control (Option C). </em>

<h2>Gel</h2>

When DNA was isolated and run in a gel, many bands migrated to different points.

These bands were the different-sized fragments of DNA samples from different species from the six sites.

<em>Researchers wanted to figure out where the silver carp is. </em>

To do it, they needed to identify the bands on the gel that belonged  to the silver carp DNA, so they included negative and positive controls to make comparisons.

<h3>Positive and negative Controls</h3>

Negative and positive controls guarantee the interpretations of the results.

  • The positive control shows the band sizes that belong to the silver carp DNA.

<em>Any</em><em> band</em><em> in the sampling sites that</em><em> matches</em><em> one of the </em><em>positive control</em><em> bands indicates that the species is present at that site.</em>

  • The negative control is the opposite. It is the absence of the species' DNA.

<h3>Results interpretation</h3>

As we can see, there are four sites where the bands match one of the bands of the positive control. These are,

  1. North shore site 1
  2. Chicago site 1
  3. Calumet site 1
  4. Calumet site 2

This means that at these four sites, the silver carp is present.

<em>So scientists know silver carp are at North Shore site 1 because one of the</em><em> bands</em><em> in </em><em>lane 1</em><em> matches a band in the </em><em>positive control</em><em> (Option C). </em>

By looking at the lane of the North Shore site 1, we can also see another band (Thinner and grey). But this band does not match either of the positive control bands. This result suggests that the grey band belongs to another species' DNA.

You can learn more about gel electrophoresis at

brainly.com/question/9437877

brainly.com/question/895793

4 0
2 years ago
A two-headed muscle (part of hamstring)<br> a. Vastus lateralis<br> b. Biceps femoris
DiKsa [7]

Answer:

I believe this is the Biceps femoris

Explanation:

6 0
3 years ago
The following are the main steps in the generation of an action potential. 1. Sodium channels are inactivated. 2. Voltage-gated
IceJOKER [234]

Answer:

<h2>B) 4, 6, 7, 1, 2, 3, 5</h2>

Explanation:

Action potential ,the change in electrical potential associated with the passage of an impulse along the membrane of exciting cell. The order of steps in generation of action potential is-4.A graded depolarization brings an area of an excitable membrane to threshold.→ 6. in excitable membrane ,after that, Sodium channel  get activated,→ 7. aftre that  Sodium ions enter the cell and depolarization occurs,→1.after that, then Sodium channels are  inactivated,→ 2. Voltage-gated potassium channels open and potassium moves out of the cell, initiating repolarization, →3. Sodium channels regain their normal properties,→ 5A temporary hyperpolarization occurs.

3 0
3 years ago
Scientist to distinguish between a bacterial cell and animal cell when viewed under a microspels
Nady [450]

Answer:

Carlo Linneus

Explanation:

great scientist discovered cell under microscope

5 0
3 years ago
Need help right answers
xxTIMURxx [149]

Answer:

1st question is because of co2 co2 is important for plant to grow so that's why people say plants grow more when people are talking Plants do need CO2, but they also need water, nitrogen, and other nutrients. Increase one of these without increasing the others and there's a limit to how much the plants will benefit.

Explanation:

2nd question

Humans consume around 50 liters of oxygen per hour and each plant leaf gives off about five milliliters of oxygen per hour. so im not really sure about the 2nd question

3 0
2 years ago
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