Which of the following cytoskeletal elements is composed of tubulin and is involved in cell division? MCQ with Answer and Explanation

Explanation:
Apis mellifera (the Italian or European honeybee) is widely preferred in commercial apiculture over the indigenous Apis cerana indica because it has a significantly higher honey collection capacity, yields more honey per hive, has a higher reproduction rate, and tends to stay in the hive for longer periods without swarming (absconding). While it can be more aggressive, its superior productivity makes it the choice for commercial beekeeping.

Explanation:
Viruses are non-living outside a host cell and cannot carry out metabolism or reproduce independently. They hijack the host cell's machinery to replicate. Hence they are obligate intracellular parasites. The reason correctly explains the assertion. Even though some debate exists on whether viruses are living, the statement that they are obligate parasites and lack metabolic machinery is accurate.

Explanation:
Diabetes insipidus results from insufficient ADH or kidney response, causing polyuria and polydipsia with dilute urine. Diabetes mellitus is hyperglycemia.