How many other bands of sea-floor crust in the figure above have the same magnetic polarity as the crust that directly straddles the rift valley?

A) two bands
B) four bands
C) five bands
D) eight bands


B

Biology & Microbiology

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When Melvin Calvin and Andrew Benson reduced the CO2 available to cells in the photosynthesis

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a. There wasn't sufficient light to drive photosynthesis. b. The cells had too little ATP. c. There were not enough reactants to generate 3PGA. d. The RuBP was defective in structure and unable to form a bond with CO2. e. Rubisco was inhibited by the RuBP excess.

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How many muscles are in the human body?

a. 1125 b. 2002 c. 206 d. 78 e. 700

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Exposure to light _____ melatonin levels

a. raises c. does not affect b. lowers

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Archaea differ from Bacteria in all of the following EXCEPT

A. DNA replication. B. cell wall composition. C. the presence of a nucleoid region. D. gene expression. E. plasma membrane make up.

Biology & Microbiology