The spread of cancer cells from their site of origin to sites distant in the body is called ________
A) metastasis
B) mitosis
C) growth
D) transformation
A
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In what way does hemoglobin act as a buffer against changes in blood pH?
A) Subsequent binding of oxygen is drastically reduced after the first one is bound. B) Hemoglobin binds some of the excess protons released by carbonic acid. C) Hemoglobin produces protons or hydroxide ions as needed to alter the blood pH. D) Hemoglobin removes excess protons from the red blood cells so that they can be excreted through the kidneys.
While studying chromosomes with an electron microscope, you identify a structure that resembles a tangled web of beaded strings. What are the strings in this structure?
a. histones b. nucleosomes c. DNA molecules d. transcription factors
Four of the five answers listed below are the result of agriculture and power generation. Select the
exception. a. pesticide runoff b. increase in atmospheric cooling c. increase in atmospheric heating d. fertilizer runoff e. radioactive wastes
_________________________ is the anaerobic breakdown of glucose to pyruvates.
A.) Kreb's cycle B.) electron transport chain C.) glycolysis D.) fermentation