The structure indicated by the letter "C" above represents ____
a. thin filament
b. myofibril
c. thick filament
d. myofilament
e. muscle fiber
ANSWER: c
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During transcription a(n) ________ can bind to a(n) ________ and increase the speed of the process
a. activator, repressor b. promoter, activator c. activator, transcription factor d. transcription factor, repressor e. activator, promoter
In a normal mammalian birth, how does the body guarantee that birth proceeds to completion?
A. Via positive feedback -- stretching of the uterus by the descending fetus induces release of oxytocin from the posterior pituitary causing even stronger uterine contractions. B. Via negative feedback -- stretching of the uterus by the descending fetus induces release of FSH and LH from the posterior pituitary causing even stronger uterine contractions. C. Via positive feedback -- stretching of the uterus by the descending fetus induces release of prolactin from the posterior pituitary causing even stronger uterine contractions. D. Via negative feedback -- stretching of the uterus by the descending fetus induces release of prostaglandins from the posterior pituitary causing weaker uterine contractions.
The source of all carbon in living organisms is
A) simple sugars. B) carbon dioxide from atmosphere and water. C) carbon-fixing bacteria. D) sedimentary rocks.
Nutrient processing is a ____ process.
A. metabolic B. generative C. responsive D. control