Which of the following refers to white blood cells that display the invader's antigen like a signal flag?

A. antigens
B. antibodies
C. helper T cells
D. macrophages


Answer: D

Psychology

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Abraham Maslow believed that after satisfying our esteem and cognitive needs, we can begin to work on our ____ needs.?

a. ?belonging b. ?aesthetic c. ?safety d. ?security

Psychology

Bandura conducted a classic study known as the "Bobo" doll study. The term Bobo refers to ____________

a) Bandura's pet name for the dog used in the study b) Bandura's loyal but strange assistant who carried out the study c) Bandura's nickname that his wife had given him d) the type of inflatable doll that was used in the study

Psychology

The Gestalt psychologists made substantial contribution to our understanding of

A. emotion. B. memory. C. motivation. D. perception.

Psychology

In the United States, which of the following is true about the measures taken to reduce the number of child deaths in motor vehicle crashes?

A. Campaigns to keep children in the back seats of cars have reduced the number of such deaths by 200 a year from 1996 to 2003. B. Airbags that have been designed to primarily protect children have significantly reduced the incidence of such deaths. C. Recommendations that 4-year-olds should not use belt-positioning booster seats have reduced the number of such deaths by almost 50 percent. D. The use of forward-facing car seats for 4-year-olds has almost brought down the number of such deaths to zero.

Psychology