Biology Questions

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.

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.

The purpose of hydrogenating unsaturated fats is to make them more solid at room temperature as it is easy store the product.

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

HIV is a virus that damages the immune system. HIV is a lifelong condition, and without treatment, a person with HIV can develop AIDS.