A polynomial f(x) with real coefficients and of degree n has n zeros (not necessarily all different). Some or all are real zeros and appear as x-intercepts when f(x) is graphed. A - Explore real solutions of polynomial equations of the form. where n is even or odd and f is a constant.
Catalase-negative bacteria may be anaerobes, or they may be facultative anaerobes that only ferment and do not respire using oxygen as a terminal electron acceptor (ie. Streptococci). Percentage of H202 used on catalase test: 1  For routine testing of aerobes, 3% hydrogen peroxide is used.atalase-negative bacteria may be anaerobes, or they may be facultative anaerobes that only ferment and do not respire using oxygen as a terminal electron acceptor (ie. Streptococci). Percentage of H202 used on catalase test: 1  For routine testing of aerobes, 3% hydrogen peroxide is used.
You may have an infection. A positive finding of the enzyme leukocyte esterase in urinalysis indicates the presence of white blood cells in the urine. This normally suggests inflammation of some sort, often from a urinary tract infection.A simple dipstick test as part of a urinalysis can detect the presence of this enzyme. Leukocyte esterase in urinalysis functions as a screening test. 2  A negative result makes it unlikely an infection exists, thus making further testing of the urinary with a microscopic examination and urine culture for bacteria usually unnecessary.