Exam 9: The Immune System and Mechanisms of Defense

One role of MHC proteins is that they serve as self markers to the human immune system.

Which one of the following diseases is caused by a virus?

A life-threatening allergic reaction (difficulty in breathing, fall in blood pressure, severe stomach cramps) is known as ________.

Bacteria are helpful to humans in many ways, including all of the following EXCEPT which one?

Viral infections can usually be treated with antibiotics.

Which one of the following is characteristic of T lymphocytes but NOT B lymphocytes?

The human body's first exposure to an antigen generates a primary ________ response.

Bacteria are classified as ________ because they are made up of cells that do not have a nucleus or membrane-bound organelles.

Use the figure below to answer the following questions. -Identify the figure above.

Which one of the following best explains why people get so many colds in their lifetime?

T cells are activated by macrophages and activated B cells, which fulfill this role by acting as ________.

Which of the following body fluids does not transmit HIV from human to human?

An immunization that uses prepared antibodies from a human or animal donor and that does not provide long-lasting protection is called ________.

Lymph nodes filter the blood and remove bacteria and other invading microorganisms that may have entered the blood stream.

Passive immunity differs from active immunity in that passive immunity

During cytotoxic T cell attack of a target cell, which one of the following is released to pierce the cell membrane of the foreign cell, which ultimately kills the target cell?

The ________ are lymphatic tissue that protect the throat.

Which of the following is associated with the specific defenses of the body?

All of the following are involved in the generation of an allergic response EXCEPT which one?

Bacterial pathogens cause symptoms of a disease by invading host cells or by producing toxins that damage host cells.