Mosquitoes can often transmit viruses from one organism to another, acting as blank of the virus.

The correct term would be vector.

Explanation:

Mosquitoes can transmit viruses from one organism to another and act as a vector for some of the viral diseases such as dengue, zika virus and many more.

The mosquito gets a virus by biting an infected animal or person. When this mosquito biting another person, the mosquito transfers that virus to you through its saliva.

Thus, the correct term would be vector.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.