Answer: Competent cells are able to take up naked DNA, they occur naturally and can be created in the laboratory
Explanation: Competent cells are cells that can modify its genetic make up and take other DNA using transfomation. Competent cells are commonky made from e.coli because it can replicate faster, readily available for use. DNA is cleavedusing restriction enzymes making up sticky ends.
The answer is any cell from the same organism.
Answer:
1. Wind
When strong winds blow, the topsoil along with the organic matter is carried away by the wind. This happens more often when the land is not covered with grass or plants. Such conditions are very common in desert and semi-desert regions where strong winds blow very frequently.
2. Water
When it rains in the hilly areas, the soil gets washed away towards the plains. The running water deposits the mineral-rich soil in the riverbed and over the years this deposition of soil can change the course of the river. This can lead to floods which cause the destruction of life and property. Water erosion leads to loss of agriculture potential.
3. Overgrazing
When cattle are allowed to graze on the same field repeatedly, all the available grass, including the roots are eaten by them. This makes the topsoil vulnerable to wind and flowing water, leading to soil erosion.
4. Deforestation
Humans have taken land from the forest to cultivate in order to feed the ever-increasing population and to build houses, industries, etc. Cutting down of trees on a large scale for these purposes is deforestation. The roots of trees hold the soil together, thus preventing the soil from getting uprooted. When large areas of the forest are cleared, the topsoil gets eroded by wind and flowing water.
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C
A single gene can influence more than one trait.
<u>Answer</u>:
ATP and NADPH are the high-energy molecule and electron carrier are produced by the light reaction of photosynthesis
<u>Explanation</u>:
In the thylakoid membrane of the chloroplast the light reaction with photosynthesis takes place. In the photosystem II the light energy is used for making of photolysis of water molecules, that also responsible for the release of electrons and oxygen having greater energy. The electrons are then moved through the electron transport chain(ETC) located in the same membrane and leads to the generation of NADPH and ATP. NADPH and ATP are molecules with greater-energy which carry and pass electrons to the dark or Calvin reaction which leads to the production of sugar.
