The gel should be placed in the correct direction so that the DNA bands can move.
- DNA is negatively charged due to the presence of phosphate groups, so it can only move towards the positively charged anode, otherwise, it will not move.
- So, when gel electrophoresis is done the side of the gel where the wells have been created and DNA samples have been loaded is placed at the side of the cathode, whereas the other side is connected to the anode.
- When the current flows, the DNA fragments also move from negatively charged cathode to positively charged anode as per their mass and size.
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The marketing of roller ball can be given with the questions such as Don't just mask the pain, fix the problem.
<h3>What is marketing?</h3>
Marketing can be given as the process of creating demand by meeting goods and services in the market. The marketing can be followed with varying messaging that targets a problem.
The complete question is given in the image attached below.
Some of the marketing messages that speak for the roller ball in the market are:
- Don't just mask the pain, fix the problem.
- Tired of taking pills that only cover up the pain? Try a topical pain reliever for something different.
- Did pain get you down? Try a new pain toolkit.
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The correct option would be B. consent can be obtained from adult stem cell donors.
The controversy behind the other option is that it is a form of life, but no consent is taken from the actual life. (i know it's phrased weirdly, my bad)
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Answer:
They provide energy, protection and insulation for the organs in the body. They're also very important in the cell membranes.
Explanation:
The correct answer is a nutrient runoff.
Nutrient runoff is a major reason for eutrophication of surface waters, in which extra amount of nutrients, generally phosphorus or nitrogen, instigate growth of algae. Sources of nutrient pollution involve surface runoff from pastures and farm fields, emissions from combustion, and discharges from septic tanks.
