Genetic goitrous cretinism is caused by lack of the enzyme to synthesize ____________________
from phenylalanine. Fill in the blank(s) with the appropriate word(s).
ANS: thyroid hormone
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The karyotype of a young patient shows two Barr bodies per cell. What condition might this child have?
A. Turner syndrome B. Triple X syndrome C. Down syndrome D. Klinefelter syndrome E. This child is a normal female.
The hydrogen bonds of water play an important role in the ability of animals to regulate their body
temperature. Explain how this occurs. What will be an ideal response?
Effects of deforestation illustrated by the Hubbard Brooks Experimental Forest include all of the
following except:a. soil erosion. b. leaching of essential nutrient minerals. c. decreased soil fertility. d. higher summer temperatures in previously shady streams. e. acid deposition.
What is the definition of the eclipse phase?
A) When the virus is developing but not yet infectious B) When a virus matures and is capable of infecting a new host C) When the active, infectious viral particle escapes from the host D) When the viral DNA becomes latent as a prophage E) When the virion enters the host cell