Astudent is measuring the effect of different temperatures on the effect of enzymes in biological systems. what temperature ranges
should she use?
(c is celsius)
a. 25 c, 30 c, 35 c, 40 c, 45 c
b. 91 c,92 c, 94 c,97 c, 101 c
c. 25 c, 30 c, 35 c, 45 c , 55 c
d .91 c,93 c, 95 c, 97 c, 99 c

A. 25 °C, 30 °C, 35 °C, 40 °C, 45 °C  

Explanation:

Each enzyme has a temperature at which it works best. In humans and many animals, that temperature is around body temperature (37 °C or 98.6 °F). Most enzymes are denatured and work poorly at 40 °C (104 °F).

That automatically eliminates Option B.

I would pick a temperature close to 37 °C (98.6 °F) and temperatures at intervals above and below that.

Option D is wrong because it includes no temperatures above body temperature.

Option C is wrong, because it includes temperatures of 45 °C and 55 °C, at which the enzymes will be denatured.

That leaves Option A as the best answer. It includes only one temperature above 40 °C.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds