Questions

The statements true about viruses are :

1. The capsid enters the host cell if the virus is enveloped.

2. Enveloped viruses bud from the host cell. 

3. HIV contains reverse transcriptase.

4. A retrovirus contains RNA.

Allows for expansion or contraction of the trachea. Hence, so large masses of food can pass through the esophagus during swallowing.

Salts and sugars work to preserve foods by creating a Hypertonic environment.

Air contains water in a gaseous form called water vapour.

 Narendra Jadhav

Study of Life in outer space or search of life external to Earth is known as Exobiology.