How is ribulose 1,5-bisphospate (RuBP) used in the first step of the Calvin-Benson cycle?

A. Three molecules of RuBP are regenerated from five molecules of G3P.
B. Three molecules of RuBP and three molecules of CO2 react to form six molecules of 3-phosphoglyceric acid.
C. RuBP reduces six molecules of 3-phosphoglyceric acid to form six molecules of G3P.
D. The phosphate group on RuBP is removed and added to ADP to make ATP.


B. Three molecules of RuBP and three molecules of CO2 react to form six molecules of 3-phosphoglyceric acid.

Biology & Microbiology

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Some birds follow moving swarms of army ants in the tropics. As the ants march along the forest floor hunting insects and small vertebrates, birds follow and pick off any insects or small vertebrates that fly or jump out of the way of the ants

This situation is an example of what kind of species interaction between the birds and the ants? A) cooperation B) consumption C) commensalism D) parasitism E) mutualism

Biology & Microbiology

Which molecule would be an indicator of fungal contamination in a drug preparation?  

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Biology & Microbiology

You need to determine if a pure culture of bacteria is gram-positive or gram-negative, but you've just spilled your only solution of crystal violet so you can't do a Gram stain.  You decide to try a lysozyme treatment on a sample of each culture and then examine the samples under the microscope.  The expected result is

A. gram-positives will lyse and appears as debris; gram-negatives will lose cellular morphology and appear as cocci. B. gram-negatives will lyse and appears as debris; gram-positives will be unaffected. C. gram-negatives will lyse and appears as debris; gram-positives will lose cellular morphology and appear as cocci. D. gram-positives will lyse and appears as debris; gram-negatives will lyse but more slowly. E. gram-positives will lyse and appears as debris; gram-negatives will be unaffected.

Biology & Microbiology

The ____ are air-filled respiratory system structures common in insects

a. gills b. tracheal tubes c. lungs d. integumentary surfaces e. air sacs

Biology & Microbiology