Most Molecular Biologists Think That Viruses Originated from Fragments of Cellular

question 4

Multiple Choice

Most molecular biologists think that viruses originated from fragments of cellular nucleic acid. Which of the following observations supports this theory?

• A) Viruses contain either DNA or RNA.
• B) Viruses are enclosed in protein capsids rather than plasma membranes.
• C) Viruses can reproduce only inside host cells.
• D) Viruses can infect both prokaryotic and eukaryotic cells.
• E) Viral genomes are usually similar to the genome of the host cell.

---

Definitions:

Biceps Brachii

A muscle located in the upper arm that flexes the elbow and rotates the forearm, consisting of two heads.

Reflex Hammer

A medical tool used by practitioners to test deep tendon reflexes, aiding in the diagnosis of neurological conditions that affect reflexes.

Tendon

is a strong, flexible band of fibrous tissue that connects muscles to bones, allowing force to be transmitted and producing movement.

Reflex Arc

The neural pathway that mediates a reflex action, involving sensory receptors, nerves, and the spinal cord.