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8090 [49]
4 years ago
14

Which of the following is a point source of water pollution?

Biology
1 answer:
Gwar [14]4 years ago
8 0
A farm because you have to water the plants and crops and give animals water
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The phenomenon where friction causes the infinitesimally thin layer of air molecules immediately adjacent to the body surface to
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Supercoiling is important for DNA structure, because Supercoiling is important for DNA structure, because it provides energy for
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Answer:

it condenses the DNA so that it can fit inside the cell.

Explanation:

Supercoiling is a level of genome packaging and is important for the packaging of the DNA which is about 2m in length inside a nucleus that is about 6microm. Supercoiling refers to the over (positive supercoiling) or under winding (negative supercoiling) of a DNA strand, and is an expression of the strain on that strand. Supercoiling is in compacting DNA, and also allows for the regulation of access of transcriptional machinery and other biological activities to the DNA and in turn gene expression. Certain enzymes such as topoisomerases are able to change DNA topology to facilitate access of DNA replication or transcription.

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3 years ago
explain how it helps in increasing the shelf life of fruits and vegetables based on membrane transport​
motikmotik

Answer: There are two categories of cross membrane transport, active and passive. While active transport requires energy, passive transport relies on concentration differences inside and outside of the membrane. With films that cover the outermost membrane of the fruit (the skin), this concentration gradient can be removed or slowed so membrane transport is also slowed and as a result, the fruit stays fresh longer. A good analogy for this is considering evaporation in an open jar on a hot day versus if there was a lid on the jar. Both jars would be in the same conditions, but the jar with the lid would retain more water.

Explanation: have a great day:)

8 0
2 years ago
Coconut milk used in tissue culture enhances cell division and plant growth. What is the active ingredient in coconut milk that
baherus [9]
<span>Coconut milk is a liquid endosperm, and has been found to be a very significant enhancer of growth and proliferation of plant stem cell tissues in the culture. Cytokinins present in the cocnut milk are attributed to this effect. Cytokinins stimulate shoot initiation, root growth, cell division, and leaf senescence.</span><span />
7 0
3 years ago
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ASAP! Please?
just olya [345]

Answer: They aren't classified as birds because monotremes are mammals, unlike birds. They are referred to as mammals because they have mammary glands responsible for manufacturing and producing milk. Birds cannot do this.

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3 years ago
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