CD8+ T cells exposed to MHC class I peptides are
A. cytotoxic T cells.
B. helper T cells.
C. both cytotoxic T cells and helper T cells.
D. natural killer cells.
E. dendritic T cells.
A
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Estimate the caloric cost of the following activity: an individual who weighs 123.5 pounds runs 4.5 miles in 58 minutes (Table 6.9 is provided)
What will be an ideal response?
Which of the following statements is true regarding energy use and pollution?
A. Energy consumption has little to do with environmental problems such as air pollution. B. Nuclear power creates energy without producing pollution. C. The mining of coal causes pollution on land and is a serious health problem. D. Off-shore oil drilling poses few risks to regional ecosystems.
In a contusion, the dermis remains intact but there is damage to the epidermis layer
Indicate whether the statement is true or false.
Non-oxidative refers to metabolic reactions that do not require the presence of oxygen
Indicate whether the statement is true or false