<em>Smoking.
</em>
<em>Being overweight or obese.
</em>
<em>Lack of physical activity.
</em>
<em>Too much salt in the diet.
</em>
<em>Too much alcohol consumption (more than 1 to 2 drinks per day)</em>
The characteristics that most of the top hit sequences share are; They contain a ribosomal RNA (rRNA) sequence. Additionally, they contain a sequence of an internal transcribed spacer. The ribosome is a cellular machine found in all organism. It serves to convert the instructions found in messenger RNA into the chains of amino-acids that make up proteins. The ribosomes is responsible for the synthesis of proteins. Internal transcribed spacer refers to the spacer DNA situated between the small-subunit ribosomal RNA and large-subunit rRNA genes in the chromosome or the corresponding transcribed region in the polycistronic rRNA precursor transcript.
It can be either diffusion, osmosis or active transport. depending on what is transported and how in which net direction they're moving.