Which of the following scenarios exemplifies cancer therapy targeted toward a specific mutation?
A) A patient with leukemia receives chemotherapeutic drug that inhibits DNA synthesis.
B) A benign tumor is surgically removed from a patient's kidney.
C) A patient with melanoma receives a drug that targets a signal transduction pathway protein.
D) A patient with two mutant tumor-suppressor alleles receives radiation and a chemotherapeutic drug that blocks mitosis.
C) A patient with melanoma receives a drug that targets a signal transduction pathway protein.
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What is the most abundant white blood cell in the body?
a. basophil b. eosinophil c. neutrophil d. mast cell
Which of the following is a characteristic of annelids?
A. radial symmetry B. cephalization C. psuedocoelom D. closed circulatory system E. incomplete digestive tract
Botulism and tetanus are caused by bacterial endospores commonly found in the soil.
Indicate whether the statement is true or false.
Which ancient habitat has allowed the formation of the most abundant fossils?
A. Eroding hillsides B. Deserts C. Polar ice caps D. Rivers and shallow seas E. Rocky plateau