Receptor tyrosine kinases (RTKs) are found at high levels on various cancer cells. A protein, Herceptin, has been found to bind to an RTK known as HER2. This information can now be utilized in breast cancer treatment if which of the following is true?
A) If HER2, administered by injection, is in sufficient concentration
B) if the patient's genome codes for the manufacture of Herceptin
C) if the patient's genome codes for the HER2 receptor
D) if the patient's cancer cells have detectable HER2
E) if Herceptin is found in the breast lymph nodes of the patient
In which of the following ways do plant hormones differ from hormones in animals?
A) plant hormones may travel in air or through vascular systems
B) animal hormones are found in much greater concentration
C) animal hormones are primarily for mating and embryonic development
D) plant hormones are synthesized from two or more distinct molecules
E) plant hormones interact primarily with intracellular receptors
A) If HER2, administered by injection, is in sufficient concentration
B) if the patient's genome codes for the manufacture of Herceptin
C) if the patient's genome codes for the HER2 receptor
D) if the patient's cancer cells have detectable HER2
E) if Herceptin is found in the breast lymph nodes of the patient
In which of the following ways do plant hormones differ from hormones in animals?
A) plant hormones may travel in air or through vascular systems
B) animal hormones are found in much greater concentration
C) animal hormones are primarily for mating and embryonic development
D) plant hormones are synthesized from two or more distinct molecules
E) plant hormones interact primarily with intracellular receptors
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I can only answer the first question. The right answer is D. Herceptine is administered to bind to detectable HER2. It is not produced inside the human body nor is it normally present anywhere there.