Because we need paper and maple coasters and furniture.
Answer:
electromagnetic waves can travel in a vacuum
Explanation:
Answer:
a. Bacteria cannot carry out splicing.
Explanation:
Human genes contain non-coding sequences called introns. Transcription of genes produces primary transcripts that undergo post-transcriptional modifications to produce mature mRNA. These modifications include removal of introns, the addition of 3' poly-A tail and 5' cap. The splicing of introns from primary transcripts is followed by ligation of protein-coding sequences exons to produce mature mRNA. The mRNA leaves the nucleus and serves as a template for protein synthesis.
Splicing of introns requires specific machinery such as several small nuclear ribonucleoprotein complexes, etc. which are not present in a prokaryotic cell. Therefore, a eukaryotic gene like the gene for human growth hormone is not expressed in a bacteria cell as these prokaryotic cells cannot carry out the splicing of introns from pre-mRNA.
Alpha rays are widely used for medical applications because they destroy human cells, usually for cancer treatment, but they lose energy at the time of transferring materials for that reason, alpha rays are not suitable for scanning suitcases at airports, since they do not would serve for that application
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An airborne pathogen would be much more dangerous than that of a foodborne and person to person. Why? Because there is a higher risk of contracting it. With person to person, you could avoid infected people all-together, but with airborne, it's more complex than that. Obviously, the molecular make-up is different as-well, but this is in regard to which pathogens you are talking about.
