Photosystem II

A) receives electrons from photosystem I.
B) passes electrons to photosystem I.
C) does not have a reaction center.
D) releases CO2 as a by-product.


Answer: B

Biology & Microbiology

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A rod-shaped bacterium is referred to as a ________

a. coccus b. spirillum c. pili d. bacillus

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Select the incorrectly-matched vertebrate and its urine concentration relative to its blood.  

A.  amphibians—isotonic B.  desert mammals—strongly hypertonic C.  marine mammals—strongly hypertonic D.  marine reptiles—isotonic E.  terrestrial birds—weakly hypertonic

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Urine flows from the ureters directly into the urethra

____________________ Indicate whether the statement is true or false.

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Which process results in flux of carbon dioxide OUT OF the atmosphere:

What will be an ideal response?

Biology & Microbiology