Two small, poorly drained lakes lie close to each other in a northern forest. The basins of both lakes are composed of the same geologic substratum. One lake is surrounded by a dense Sphagnum mat; the other is not
Compared to the pond with Sphagnum, the pond lacking the moss mat should have _____. A) lower numbers of bacteria
B) reduced rates of decomposition
C) reduced oxygen content
D) less-acidic water
D
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The alternative forms of a gene that can be expressed are known as
A) alleles. B) genes. C) loci. D) spores. E) haplotypes.
Most of the nutrient digestion and absorption takes place in the ____
a. stomach b. duodenum c. jejunum d. ileum e. large intestines
What stage of cellular respiration can occur in human cells with or without oxygen present?
A. The electron transport chain B. The Citric acid cycle C. Pyruvate oxidation D. Glycolysis
Tight junctions are composed of networks of all of the following except
a. claudin. b. occludin. c. junctional adhesion molecules. d. integrin.