Your friend wants to know why patients that receive organ transplants have to take immune-suppressing drugs for the rest of their lives. You tell her that:
1.The transplanted organ will only work properly with the immune-suppressing drugs.
2.The MHC markers of the donor organ do not match the patient, so the patient’s immune system will reject the organ without the medication.
3.The donor organ has a different MHC marker, which will attack and kill the patient’s cells if the medication isn’t taken regularly.
4.The medication is needed so the patient will not get sick after the transplant, which could cause the new organ to not function properly.
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Steroid hormomes are an example of an effector which regulates regulatory transcription factor activity
Indicate whether the statement is true or false
You are studying a newly-established nature preserve, and find that the biomass of herbivores within it is 10 kJ/m2. Based on the graph below, what would you predict about the primary productivity of the area relative to other ecosystems?
A. It would be higher than tundra, but lower than savannah. B. It would be higher than savanna, but lower then tropical forest. C. It would be higher than savannah, but lower than temperate forest. D. It would be higher than desert, but lower than tundra.
In this representation of transcription, strand #
1 represents
a. the coding DNA strand. b. the transcript. c. the template for the coding DNA strand. d. the coded RNA strand. e. both the transcript and the coded RNA strand.
Mucus-secreting cells and cilia in the bronchi serve what function?
a. help air exchange b. trap and remove bacteria and airborne particles c. destroy inhaled bacteria d. warm inspired air e. increase carbon dioxide removal