Which of the following is known to reduce nitrates to nitrites?

A. Calcium
B. Zinc
C. Potassium
D. Iron


Ans: B. Zinc

Biology & Microbiology

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What is the right sequence of events applied in

the scientific method?

a. question; hypothesis; observation; data; test; conclusion b. observation; hypothesis; question; data; test; conclusion c. observation; hypothesis; question; test; data; conclusion d. observation; question; hypothesis; test; data; conclusion e. question; hypothesis; data; observation; test; conclusion

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A cell that accumulates lots of mutational damage to its DNA may escape the normal controls of the cell cycle and

become ____________________. Fill in the blank(s) with the appropriate word(s).

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________ are genetically engineered proteins that respond directly to cytosolic calcium fluxes by changing their fluorescence intensity

Fill in the blank with correct word.

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