BIOL 1308 REVIEW QUESTIONS FOR TEST 4

Front

Which of these best describes a virus?

Back

A nonliving complex of RNA or DNA protected by a protein coat

Front

What are the two components that all viruses are made up of?

Back

A protein capsid and genetic material, in the form of either RNA or DNA.

Front

What is the correct sequence of events in viral reproduction?

Back

Penetration, attachment, integration, biosynthesis, maturation, release

Front

The cycle of viral infection that will rapidly result in the death of a bacterial cell is called the ______ cycle.

Back

lytic

Front

Which type of cells would a flu virus most likely target as the means of entry into the body?

Back

Epithelial cells lining the respiratory system

Front

A certain species of butterfly varies in color from white to dark blue. The birds found in the same area feed on the white or lightly colored butterflies, leaving butterflies that are darkly colored. This is an example of what type of selection?

Back

Directional selection

Front

In the cells of all organisms, the information that specifies traits is stored in the pattern and order of nucleotides in ______ molecules.

Back

DNA

Front

During previous flu seasons, small variations in the influenza virus resulted in the immune system's inability to fully recognize and respond to flu exposure. As a result, vaccine effectiveness could be as low as 30%. This is an example of

Back

antigenic drift.

Front

When two different forms of a virus infect the same cell, the host cell may manufacture viral particles from both viruses to reassemble them into a new form of virus. This process is called

Back

antigenic shift.

Front

How does the body recognize "self" cells compared to "nonself" cells?

Back

"Self" cells are marked by glycoproteins called major-histocompatibility complexes (MHCs).