Four of the five examples listed below illustrate
mutualism. Select the exception.
a. plants and pollinators
b. plants and seed dispersal by seed-eating animals
c. mycorrhizae
d. antibiotics
e. lichen
Answer: d
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Osteogenesis imperfecta is a rare human condition caused by a mutation in a gene encoding Type I collagen. In some forms of the disease, the mutation leads to the production of procollagen that has a defective extension sequence; this defect interferes with the assembly of functional collagen fibers. Which of the following symptoms would you expect to see in individuals with osteogenesis
imperfecta? A. Very weak bones. B. Defective kidneys and capillaries. C. Thin discs between vertebrae. D. Respiratory problems/lung defects. E. Very strong tendons and ligaments/tight joints.
Glycogen is formed by cells in the ________
a. brain only b. both liver and muscle c. liver only d. muscle only
The cochlea is a coiled structure with fluid-filled ducts that holds the mechanoreceptors responsible for
hearing in its __________. Fill in the blank(s) with the appropriate word(s).
Plants that have foreign DNA inserted into their genome for the purpose of producing products beneficial to humans are referred to as
A) recombinants. B) mutated. C) transgenic. D) inferior. E) genetically spliced.