Which of the following organs generates erythropoietin (EPO), a protein hormone responsible for RBC production?
a) brain
b) spleen
c) bone marrow
d) kidney
e) livver
Answer: d) kidney
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Complex traits are usually quantified by ____________________ rather than by ____________________.Fill in the blank(s) with the appropriate word(s)
You are working to characterize a novel protein in mice. Analysis shows that high levels of the primary transcript that codes for this protein are found in tissue from the brain, muscle, liver, and pancreas. However, an antibody that recognizes the C-terminal portion of the protein indicates that the protein is present in brain, muscle, and liver, but not in the pancreas. What is the most likely explanation for this result?
A. The transcript is immediately degraded in the pancreas. B. The transcript receives a 3' poly-A tail in the pancreas. C. The gene that codes for this protein is not transcribed in the pancreas. D. Alternative splicing in the pancreas creates a protein missing the domain that the antibody recognizes. E. The transcript receives a 5' cap in the pancreas.
Cotyledons and endosperm both provide nutrition. What is the difference between them?
A) Cotyledons provide nutrition for the developing embryo; endosperm provides nutrition for the young seedling. B) Endosperm provides nutrition for the developing embryo; cotyledons provide nutrition for the young seedling. C) Cotyledons are found only in flowering plants; endosperm is found only in young ferns. D) Endosperm is found only in monocots; cotyledons are found only in dicots. E) Endosperm is always photosynthetic; cotyledons are usually not.
What is one way that a technician is able to diagnose a patient with a parasitic worm infection?
examining the patient's skin with a magnifying glass doing an MRI scan on the patient finding eggs in a blood sample culturing a sputum sample