Answer:
The answer to this question would be: antiviral agents that block any of the steps in the transcription process, since without newly produced RNA, or DNA for the new virions, it would be impossible for the virus to replicate itself and thus spread out to infect further. An example of such a drug is aciclovir, and what they do is inhibit, or prevent, the transcription process, either of DNA, or RNA depending on the invading virus, so that viral proteins cannot be coded for and the new virions cannot be assembled.
These agents usually are nucleotide analogues that mimick the DNA, or RNA, that the virus will need in order to replicate its genetic material for the new viruses. However, since they are not the correct material, these analogues will inhibit correct replication, or further coding, of the genetic material. This in turn will ensure that either no proteins, or weak proteins, will be produced and the virus will be left weakened for the attack of the immune system.
infiltration and surface runoff
rain, sleet, hail, snow, and freezing rain
oceans, seas, lakes, and rivers
In genetics, dominant alleles are often represented by capital letters and recessive alleles by lower-case letters. Therefore, the allele for brown eyes can be symbolized as 'B' and the allele for blue eyes as 'b'.
In genetics, capital letters are used to represent dominant alleles, while lower-case letters are used to represent recessive alleles. Therefore, we can use 'B' as the symbol for the dominant brown eye allele and 'b' for the recessive blue eye allele. When both 'B' alleles are present (BB), or when a 'B' and a 'b' allele are present (Bb), the individual will have brown eyes, because 'B' is dominant. However, when both 'b' alleles are present (bb), the individual will have blue eyes, because the blue eye allele can only be expressed when the dominant allele is not present.
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b. False
B. carbon dioxide
C. chitin
Answer: A. Silicon dioxide
Diatoms are unicellular algae that are found in the freshwater, brackish and marine water. These organisms exhibit cell wall that are made up of silica that is hydrated silicon dioxide. This type of cell wall is called as frustule. The cell wall is divided into two valves called as thecae.