The correct answer is option A- HIV virus.
HIV virus is an example of enveloped virus, that has the ability to infect a host cell by attaching itself to it and fusing with the host cell. Once infected, the virus leaves the host cell and moves to another cells to infect them. The HIV virus contains glycoprotein spikes to attach to the host cell.
Answer:
Topoisomerase is an enzyme which participates in the unwinding of DNA helix.
Explanation:
During transcription and DNA replication, the DNA needs to be unwound in order for the transcription/replication machinery to gain access to the DNA so it can be copied or replicate, respectively.
<span>The scientist who disproved the idea that life comes from non-life is Louis Pasteur. The correct option is B. Louis Pasteur was a French scinentist who contributed in various way to science. He supported biogenesis theory which says that living cells can only arise from pre-existing living cells and not from non-living cells.</span>
Answer:
lichens and bryophytes[secondary seccession]
Explanation:
after the wildfire, the area would bee too dry and therfore it'll lead to a xerarch succession. lichens and bryophytes would be the climax communities.
Answer:
the answer is letter D. hope this helps ^v^