Which regulatory protein is mismatched with its function?
a. Type I interferons?inhibit viral replication
b. interleukin-1?resets body's thermostat, resulting in fever
c. tumor necrosis factor?kills tumor cells
d. cytokines?secrete antibodies
e. Type II interferons?stimulate macrophages to destroy tumor cells
d
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In humans, having dimples in the cheeks is a dominant trait. If a child has dimples but only one of her parents does, what are the genotypes of her parents? (D = dimples; d = no dimples)
A. One parent dd, other parent DD B. One parent dd, other parent Dd C. One parent Dd, other parent DD D. One parent must be DD, the other parent could be either dd or Dd E. One parent must be dd, the other parent could be either Dd or DD
How do plumes affect an area? a. They allow more sunlight absorption
b. They remove the oxygen from the water. c. They create areas for high speed currents to pass. d. They create high amounts of suspended particles in the water column.
With regard to photosynthesis,
photorespiration a. is more efficient in producing carbohydrates. b. predominates in C3 plants in cool weather when water is plentiful. c. predominates in C4 plants on hot days. d. produces the same amount of PGA. e. does none of these
Keep stomata open only at night Which plants keep their stomata open only at night?
a) CAM b) C3 c) C4 d) No plants keep their stomata open only at night