The structure indicated by the letter "C" above represents ____

a. thin filament
b. myofibril
c. thick filament
d. myofilament
e. muscle fiber


ANSWER: c

Biology & Microbiology

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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

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology

Nutrient processing is a ____ process. 

A. metabolic B. generative C. responsive D. control

Biology & Microbiology