A particular type of common water snake is only found on islands in Lake Erie. This represents a
A. recessive trait.
B. genetically distinct population.
C. clone.
D. hybrid.
B. genetically distinct population.
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Squids are examples of ____
a. cephalopods b. pseudopods c. monopods d. gastropods e. polypods
HeLa cells have been used in research to
a. identify cell structures. b. study sickle cell anemia. c. study the effects of hyperoxia on cells. d. study the mechanisms of cancer. e. study various lung diseases.
Addison's disease is a disorder of the adrenal glands, which are glands that secrete hormones. This condition can progress to a severe illness which may include very low blood pressure and coma. Addison's disease is a disease of which organ system?
A. Integumentary system B. Endocrine system C. Circulatory system D. Respiratory system
Which of the following statements is false?
(a) Proteoglycans can act as filters to regulate which molecules pass through the extracellular medium. (b) The negative charge associated with proteoglycans attracts cations, which cause water to be sucked into the extracellular matrix. (c) Proteoglycans are a major component of compact connective tissues but are relatively unimportant in watery tissues such as the jellylike substance in the interior of the eye. (d) Glycosaminoglycans are components of proteoglycan.