Although cancer may originate in many regions of the body, many patients die from cancerous growth in the lungs, lymph glands, or liver. This is most readily explained as
A. these organs simply being more susceptible to cancer.
B. growth anywhere but in these organs is called benign.
C. metastasis occurring more commonly in organs that have a filter effect.
D. spreading of cancer by angiogenesis.
E. proteinase enzymes making cancer particularly damaging to these tissues.
Answer: C
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Assimilation efficiency is the ratio of ____
a. energy content of food consumed to the energy content of food available b. energy absorbed from consumed food to the food’s total energy content c. energy content of new tissue produced to the energy assimilated from food d. net productivity at one trophic level to the trophic level below e. producers to consumers
All gastropods are grazers
Indicate whether the statement is true or false
Which way do ocean currents circulate in the Northern Hemisphere?
a. counterclockwise b. clockwise c. away from continents
d. toward the shore e. parallel to the direction of the shore
A mutation that has pleiotropic consequences
A) results in a single symptom in the affected person. B) may result in only slight symptoms in a person with the mutation. C) is only detected in homozygotes. D) has widespread consequences in the affected person. E) cannot be detected by enzyme assay.