The syndrome known as AIDS is characterized
A) by the presence of HIV.
B) as an opportunistic disease resulting from herpesvirus reactivation.
C) by CTL attack on CD4 T cells.
D) by one or more opportunistic diseases and the presence of HIV.
E) by the presence of anti-HIV antibodies.
D
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The inability of a virus to bind to its target cell as a result of antibody binding to the virus is referred to as ________.
A. toxin neutralization B. adherence prevention C. cytotoxicity D. viral neutralization
Malaria is caused by ____ species of Plasmodium
a. a single b. two c. three d. four e. five
A farmer is growing glyphosate-resistant transgenic soybeans. What are you unlikely to see in those fields during the growing season?
A. Caterpillars B. Irrigation C. A tilling machine D. Field mice
Joy took the notes shown below while learning about cells. Forms boundary between a cell and the outside environment • Controls the movement of materials into and out of the cell • Consists of double layer of phospholipids She forgot to write the name of the cell structure that her class was studying that day. What structure is described in her notes?
A. endoplasmic reticulum B. cell membrane C. cell wall D. nucleus