Four of the five answers listed below are bases used to construct nucleic acids. Select the exception
a. cytosine
b. adenine
c. thymine
d. guanine
e. phenylalanine
e
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Why is fiber an important part of a healthful human diet?
A) It is easily digested into monosaccharides, which are used for energy. B) It may decrease the risk of certain types of cancers. C) It increases the amount of HDL and LDL cholesterol in the body. D) It contains more energy, gram for gram, than any other nutrient.
What is one drawbacks to using pheromones for communication?
a. They are effective only at night. b. They can only affect unrelated species. c. They are toxic to unrelated species. d. They require little energy for production. e. They transmit information slowly.
The diagnosis of Down syndrome is made by examining the individual's
a. spores. b. karyotype. c. chromatin. d. nucleosomes. e. kinetochores.
Mycetismus is caused by
A) ingestion of food contaminated with fungus. B) ingestion of toxic mushrooms. C) ingestion of milk from a cow that has ingested feed contaminated with fungal toxins. D) inhalation of fungal allergens. E) contamination of a wound with pathogenic fungi present in the skin.