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单词 viroid
例句 viroid
Like viruses, they simply take over the molecular machinery of a much larger, well-functioning cell and change it from a factory for making more cells into a factory for making more viroids. Cosmos 1980-01-01T00:00:00Z
Such organisms, having to be more self-reliant, are also more complicated than viroids and viruses. Cosmos 1980-01-01T00:00:00Z
The first living things may have been something like free-living viroids only a few hundred nucleotides long. Cosmos 1980-01-01T00:00:00Z
The smallest living things known, the viroids, are composed of less than 10,000 atoms. Cosmos 1980-01-01T00:00:00Z
At the time, scientists thought that something as small as viroids, which are one eightieth the size of many viruses, were too minuscule to cause an infection. Theodor Diener, Who Discovered the Tiniest of Infectious Agents, Dies at 102 2023-05-08T04:00:00Z
Unlike a virus, a viroid has no protein coat. Theodor Diener, scientist who discovered the tiny viroid, dies at 102 2023-04-13T04:00:00Z
However, it’s interesting to note that prions and viroids—pathogens that are far simpler in structure than viruses—can produce deadly diseases, including mad cow disease and Creutzfeldt–Jakob disease. Biology for AP Courses 2022-06-09T00:00:00Z
Viruses depend on host cells to replicate, as do other ‘selfish’ genetic elements, such as viroids and plasmids. Classify viruses — the gain is worth the pain 2019-02-19T05:00:00Z
Dr. Elena and his colleagues base their argument on the bizarre biology of viroids, which are nothing more than naked loops of RNA. A Tiny Emissary From the Ancient Past 2014-09-25T04:00:00Z
Like viruses, viroids reproduce by invading healthy cells and reprogramming them to duplicate the viroid’s genetic makeup instead of the cell’s own. Theodor Diener, Who Discovered the Tiniest of Infectious Agents, Dies at 102 2023-05-08T04:00:00Z
But Dr. Diener’s research proved that a viroid — so small that it is barely visible even with an electron microscope — can indeed mount an effective attack. Theodor Diener, scientist who discovered the tiny viroid, dies at 102 2023-04-13T04:00:00Z
Human diseases caused by viroids have yet to be identified. Biology for AP Courses 2022-06-09T00:00:00Z
A viroid functions in a manner similar to that of a virus, invading a cell and making it reproduce the viroid’s RNA. Theodor Diener, scientist who discovered the tiny viroid, dies at 102 2023-04-13T04:00:00Z
All the genetic material in a viroid may total less than 400 nucleotides. A Tiny Emissary From the Ancient Past 2014-09-25T04:00:00Z
After identifying the viroid that caused spindle tuber disease, he helped develop a test to detect it. Theodor Diener, Who Discovered the Tiniest of Infectious Agents, Dies at 102 2023-05-08T04:00:00Z
After identifying the viroid, Dr. Diener helped develop a test to detect the one that causes potato spindle tuber disease. Theodor Diener, scientist who discovered the tiny viroid, dies at 102 2023-04-13T04:00:00Z
Which of the following statements about viroids is true? Biology for AP Courses 2022-06-09T00:00:00Z
There are more than 30 known species of viroids in plant pathology. Theodor Diener, scientist who discovered the tiny viroid, dies at 102 2023-04-13T04:00:00Z
Scientists notice viroids only when they harm the plants we raise. A Tiny Emissary From the Ancient Past 2014-09-25T04:00:00Z
If viroids really did first evolve billions of years ago, then they ought to infect more species than domesticated plants. A Tiny Emissary From the Ancient Past 2014-09-25T04:00:00Z
Like many scientific advances, Dr. Diener’s discovery of the viroid was the successful result of many earlier unsuccessful tries. Theodor Diener, scientist who discovered the tiny viroid, dies at 102 2023-04-13T04:00:00Z
That viroids might be holdovers from an ancient, almost mythical time seems more logical to Dr. Elena and his colleagues than to think these odd organisms recently evolved. A Tiny Emissary From the Ancient Past 2014-09-25T04:00:00Z
It’s unlikely, for example, that viroids are just viruses that lost their shells. A Tiny Emissary From the Ancient Past 2014-09-25T04:00:00Z
The strand then loops into a circle — a new viroid. A Tiny Emissary From the Ancient Past 2014-09-25T04:00:00Z
But when DNA-based life emerged and conquered the world, viroids evolved into parasites. A Tiny Emissary From the Ancient Past 2014-09-25T04:00:00Z
Using research methods including centrifugation, he determined that the cause was not a virus, as other scientists had speculated, but rather a new, far smaller pathogen: the viroid. Theodor Diener, scientist who discovered the tiny viroid, dies at 102 2023-04-13T04:00:00Z
But viroids may be much more than agricultural pests. A Tiny Emissary From the Ancient Past 2014-09-25T04:00:00Z
“I wouldn’t be surprised if viroids are found in cyanobacteria,” Dr. Flores said. A Tiny Emissary From the Ancient Past 2014-09-25T04:00:00Z
“The evolutionary origins of viruses and viroids are totally different,” said Ricardo Flores, a biologist at the Polytechnic University of València and co-author on the new paper. A Tiny Emissary From the Ancient Past 2014-09-25T04:00:00Z
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更新时间:2025/3/13 14:36:25