What is the chemical equation for nitrogen fixation

In urease test we use indicater phynol red but bacteria positive appear as a pink color. why?

What is a gamete apex?

Which of the following characteristics would you expect to find in a population of birds in which females choose their mates? A. The males have brightly colored feathers. B. The females are much larger than the males. C.

What are the advantages to using artificial blood?

Which Statement of the following statements is true. A. Most metals cannot be stored in solid form B. Most metals cannot be stored in liquid form C. Most metals cannot be stored in gaseous form D. Most metals can be stored as a Solid, a.

Mary lou's cancer began in her skin and then spread to her liver and brain. what type of cancer does mary lou likely have?

What is allele frequency

Explain what occurs in cell differentiation and morphogenesis

What would most likely be the result of a malfunctioning liver? • difficultly passing urine • inability to grow hair •buildup of toxins •limited feces production

How are malignant tumors different from benign tumors?