Compare T-helper cells with T-cytotoxic cells. How are they different?
What will be an ideal response?
T-helper cells are immune cells that act to direct and amplify the immune response through the use of chemical messengers. They have no ability to engage in phagocytic or cytotoxic actions but can direct other cells to do so. A different type of T cell, the T-cytotoxic cell, does engage directly in the fight because like the NK cell, it is "licensed to kill." If you think of an NK cell as like the innate immune system's equivalent of a 007 lymphocyte, you could think of a T-cytotoxic cell as the adaptive immune system's 008 lymphocyte.
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A mechanism for controlling order effects either by including all orders or treatment presentations or by randomly determining the order for each participants is a. ordering
b. counterbalancing. c. a Latin square. d. counterbalancing and a Latin square.
The medical model views abnormal behavior as resulting from
a) drug interactions. b) poor nutritional habits. c) exposure to teratogens. d) underlying organic causes.
Define and provide an example of brain plasticity
What will be an ideal response?
Which of the following individuals based his or her occupational choice on intrinsic work rewards?
A) Felicia, who became a banker because she came from a poor family and always dreamed of working with and having a lot of money B) Greg, who became a salesman because he always found it very enjoyable to meet and talk with new people C) Owen, who became an architect because ever since he was a little boy, he always liked sketching buildings D) Whitney, who became a kindergarten teacher in an impoverished neighborhood because she wanted to make a difference in children's lives