<span>General Characteristics of Porifera. These are multicellular organisms which are sessile/sedentary in nature.
Source: Google</span>
Answer:
A pair of homologous chromosomes is called Bivalents
Cyclins are proteins, (so they are not carbohydrates - we in any case reject option A) that regulate the cell cycle - that is the division of the cell. The correct answer is c! Specifically, they active cyclin- dependent kinase enzymes.
Examples of cyclins are cyclyn A and Cyclyn D
The dry cleaning industry is the primary user of the chemical perchloroethylene (PCE). The research done by the researchers at the Boston university have found that the PCE chemical increases the risk of developing mental illnesses in the people working with it. Since, it is a common name in the dry-cleaning industry, the workers in this industry are much more prone to mental illnesses a compared to other people.
Hence, the answer is 'dry cleaning industry'.
