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Recommended textbook solutionsHuman Resource Management15th EditionJohn David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine 249 solutions
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How do nutrients enter the root cells of an onion plant?The plant root cells embedded within the casparian strip force all nutrient ions to enter directly through these living cells. The nutrient ions must move from the outside to the inside of the root. This can't occur by diffusion because the ion concentration inside the root is higher than the concentration outside it.
What factor causes DNA fragments to move in this technique?DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively charged electrode. Shorter strands of DNA move more quickly through the gel than longer strands resulting in the fragments being arranged in order of size.
Why the breathing rate decreases several minutes after physical activity has stopped?Why would the breathing rate decrease several minutes after physical activity has stopped. They no longer need as much oxygen to get to muscles.
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