Which of the following statements is/are correct?<br/>1. Viruses lack enzymes necessary for the generation of energy.<br/>2. Viruses can be cultured in any synthetic medium.<br/>3. Viruses are transmitted from one organism to another by biological vectors only.<br/><br/>Select the correct answer using the codes given below.

1. Correct. Viruses do not have their own cellular machinery for metabolism and ATP generation; they depend on the host cell for energy and biosynthesis.

2. Incorrect. Viruses cannot be cultured in just any synthetic medium; they require living host cells, tissues, or embryonated eggs for replication.

3. Incorrect. Viruses are not transmitted only by biological vectors; they can spread by air, contact, droplets, food/water, body fluids, and also by vectors in some cases.

Hence, only statement 1 is correct.