Answer:
d. viriod
Potato spindle-tuber disease, which causes potatoes to become gnarled and cracked, is caused by an infectious agent consisting of a small circular RNA molecule that totally lacks a protein coat. These infectious agents are thought to exert their effects by interfering with the cell's normal path of gene expression. Such an infectious agent is known as a(n): <u>viriod</u>.
Explanation:
Viriods are very small , covalently closed, circular RNA molecules capable of autonomous replication and induction of disease.
They range in size from approximately 20nm and are infectious particles.
They consist only of Nucleic acid (RNA) and exert their effects by interfering with the cell's normal path of gene expression.
They mainly cause diseases in Plants.
As in the potato spindle-tuber disease, the infectious agent has all the characteristics as that of a virioid. Hence <u>Viriod</u> is the right choice.
I got you all you have to do is search it up lol
Answer:
Alternating the compressor role every 2 minutes.
Explanation:
- High-quality CPR is essential to help the person survive after getting into cardiac arrest.
- In the high-quality CPR, two rescuers are involved and they switch positions in the CPR after every two minutes.
- By switching their positions the<em> two rescuers alternate in this high-quality CPR to give the chest compressions. </em>
- This switch is essential to reduce the fatigue faced by the rescuer.
The answer is C. The method which involves counting the number of organism in a specific area is sampling. It is one common method to estimate the population of certain organisms used by biologists. In a given range, the number of plot is determined and per plot the number of individuals is multiplied to the number of plots then this results to an approximate population size.