Delayed type hypersensitivity primarily involves

A. erythrocytes.
B. B cells.
C. T cells.
D. mast cells.


C

Biology & Microbiology

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A taxis is distinguished from a kinesis because a taxis is ____ movement while a kinesis is ____

movement.

a. ordered; a change in the rate of b. a migratory; a local c. random; directional d. a group; an individual e. slow; fast

Biology & Microbiology

Which of the following can be changed based on

new evidence? a. hypothesis b. theory c. prediction d. experiment e. all of these

Biology & Microbiology

All of the following can contribute to desertification

EXCEPT a. drought. b. overplowing. c. overgrazing. d. farming in areas with high winds. e. all of these.

Biology & Microbiology

The release of DDT into the environment to control some insect pests will result in the highest

detectable concentrations a. at the bottom of the food chain. b. in the targeted insect pest. c. in the middle of the food chain. d. at the end of the food chain. e. nowhere, because DDT is degraded rapidly.

Biology & Microbiology