Q1: All of the following are diseases caused by viroids except:

potato spindle-tuber disease.
fatal familial insomnia.
chrysanthemum stunt disease.
exocortis disease of citrus trees.

Q2 The ___________ stage in the life cycle of viruses differs greatly because of the different types of nucleic acids found in each virus.

 Syntheis

 Q3 Considering the diversity of membranes and their components in bacterial and archaeal cells, which of the following statements are correct about ALL prokaryotic membranes?

Cell membranes require a hydrophobic interior and two hydrophilic surfaces to be an effective barrier between the cell cytoplasm and its external environment.

Membrane lipids are covalently bonded to glycerol.

Membrane thickness is equivalent to a 40-carbon hydrocarbon chain either in the form of two C20 bilayers, or a single C40 monolayer.

 Q4 some archaea have been observed to form tubelike structures with tiny grappling hooks at the ends. these tubelike structures are called

 Hami……  For full solution click below to purchase