Genes produce their products ________
A) only when the appropriate hormone is present
B) when the transcription activator is inhibited by an extracellular signal
C) as their products are needed or not
D) at a steady rate all the time
C
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Tissue that is specialized for contraction is ________ tissue
A) loose connective B) dense connective C) epithelial D) nerve E) muscle
Underlying the enamel of a tooth is a connective tissue called __________ that contains odontoblasts.
Fill in the blank(s) with the appropriate word(s).
Tucking a cat's head under your arm is a safe restraint
Indicate whether the statement is true or false
To trigger bone growth, growth hormone stimulates the
A. thyroid to produce calcitriol. B. liver to produce calcitonin. C. liver to produce somatomedin. D. brain to produce serotonin. E. parathyroid to produce parathyroid hormone.