Anemia refers to ____
a. too many or abnormal red blood cells
b. too few or abnormal white blood cells
c. too few or abnormal red blood cells
d. too many or abnormal white blood cells
e. a form of leukemia
ANSWER: c
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Blood is pumped from the heart into the arterial system, which branches from arteries into fine _________.
A. arterioles B. veins C. capillaries D. venules
Matching. Choose the one most appropriate answer
for each. 1. ___ benthic province 2. ___ biome 3. ___ hydrothermal ecosystem 4. ___ estuaries 5. ___ savanna 6. ___ taiga 7. ___ littoral zone 8. ___ tropical rain forest 9. ___ tundra 10. ___ upwellings A. northern coniferous forest B. increases oceanic productivity C. mosaics of tall, coarse grasses, shrubs, and low trees; even, humid forests; high rainfall D. stratified on rocky coasts E. includes sediments and rocks on the ocean bottom F. stratified communities with vines, orchids, and monkeys, and nutrient-poor soil G. chemoautotrophs are the primary producers H. dwarf willows, mosses, lichens, caribou, and permafrost I. nurseries of the oceans J. a large region characterized by its large array of dominant primary producers
Splicing of mRNA removes which of the following?
a. promoter b. nucleotide cap c. introns d. transcript e. exons
Scientists are now using an expanded definition of intelligence, beyond IQ, called
____________________. Fill in the blank(s) with the appropriate word(s).