It is the motile because it is what cause the movement of cells over surfaces without the aid of flagella
Products are released from the active site of an enzyme during a chemical reaction. Active sites directly bind to the substrates and carry out the reaction. It is this site, where product if formed, and after completion of the reaction, are released. It possesses catalytic group for making and breaking the bonds, for carrying out the reaction.
Answer:
The correct answer is B.
Explanation:
Given the baltimore's scheme which used for virus classifications, the most closely related option of virus to the described polio virus with a single stranded RNA in the question would be retroviruses that require a DNA intermediate.
Because much like the single-stranded RNA viruses, the retroviruses do not contain any DNA but they do have an enzyme named reverse transcriptase which they can use to replicate their RNA into the host cells DNA and use the end product for their benefits. So they both work in similar ways.
I hope this answer helps.
The purpose of a vortex instrument is to mix "small vials of liquids" in a laboratory.
Explanation:
A vortex instrument or a mixer is an laboratory instrument which is used to mix liquids in small vials.
The term vortex means swirling of a mass of air and this instrument also mixes liquid through swirling movement inside a tube.
A vortex unit is run by an electric motor which moves a rubber cup attached to the drive shaft.
The rubber cup swirls or oscillates in a circular motion and when a test tube with the liquid is pressed in the cup, the liquid contents get mixed through the transmission of the circular motion from the cup to the liquid. The speed of the rotation can be controlled.
