When we watch Olympic athletes perform, we are admiring the expert control of which systems working together?
A. Nervous, muscular, and skeletal systems
B. Muscular, integumentary, and circulatory systems
C. Skeletal, endocrine, and circulatory systems
D. Nervous, circulatory, and skeletal systems
Answer: A
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Which one is not a function of the liver? a. Maintains amino acid levels
b. Breaks down old red blood cells. c. Storage of vitamins. d. Stores bile. e. Removes toxins from the blood.
Koch's postulates are the essential foundation for which of the following?
a. The steps that relate a specific microbe to a specific disease (etiology) b. The experiments leading to the germ theory of disease c. The process used to develop pasteurization d. The experiments leading to the development of the scientific method
The endosymbiotic theory states that ___________; one piece of evidence supporting this theory is the fact that ___________.
A. mitochondria and chloroplasts originated as ingested prokaryotes ... mitochondria and chloroplasts have their own DNA B. two organisms live in close association ... the two participating individuals are two different species C. the genomes of complex animals came in part from the genomes of invading pathogens ... the human genome contains the complete genomes of 120 viruses and 10 bacteria D. the first hereditary material was RNA ... mitochondria and chloroplasts have heredity based on RNA
Endospores survive a variety of harsh conditions in part because of the presence of
A. mycolic acid. B. lipopolysaccharide. C. hopanoids. D. dipicolinic acid. E. glycoproteins.