<span>Pesticides sprayed on
plants were eaten by small animals, which were later consumed by birds of prey.
The DDT poison harmed both the adult birds and the eggs that they laid. The egg
shells became too thin to with stand the incubation period, and were often
crushed. Eggs that were not crushed during incubation often did not hatch, due
to high levels of DDT and its derivatives.<span> </span></span>
Answer:
False.
Explanation:
The membrane potential may be defined as the difference in the electric potential of the cell between the outside and inside environment. The unequal distribution of ions is responsible for membrane potential.
Different cells that carries the resting membrane potential are nerve cell, muscles cell and many more. The resting membrane potential of nerve cell is -70mV.
Thus, the correct answer is option (b).
Answer:
She can answer .which part of the magnet is said strongest at attracting iron?And how fast does iron lose it magnetisms?
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Explanation:
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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