The extent to which a given gene is transcribed presumably depends upon __________.
a) the combination of initiation factors bound to its upstream regulatory elements
b) the combination of translational factors bound to its upstream regulatory elements
c) the particular combination of transcription factors bound to its upstream regulatory elements
d) the single transcription factor bound to its upstream regulatory elements
e) the particular combination of transcription factors bound to its downstream regulatory elements
Ans: c) the particular combination of transcription factors bound to its upstream regulatory elements
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When phosphorus is abundant in soils, it may by unavailable to plants because _____.
_____ the phosphorus is bound to nitrogen. _____ the phosphorus is unlimited. _____ the phosphorus is bound to clay. _____ the phosphorus is in a form that is not taken up by plants.
Answer the question using the accompanying figure. Which number identifies the structure that carries out protein
synthesis?
a. 2 b. 4 c. 5 d. 6 e. 9
Which of the following is a substrate of ATM (ataxia telangiectasia mutated) or ATR?
A. Cdc25A B. Cdc25C C. cyclin B D. Chk1 E. Rb
Which of the following body systems is located in only one cavity of the body?
A. immune system B. muscular system C. cardiovascular system D. skeletal system E. urinary system