Which of the following will cause an enzyme to permanently lose its properties i. hydrolysis ii. freezing to –20°c iii. dissolving it in water
a. i only
b. ii only
c. i and ii only
d. i and iii only

C. I and II only

Explanation:

Hydrolisis is the process by which chemical compounds berak down with the elements of water, enzymes do this often, for example in the process of digestion, many enzymes work better when dissolved in water, so the only thing that would cause an enzyme to permanently lose its properties would be freezing it to -20ºC, and hydrolisis would eliminate the enzyme forever though completing its purpose. So it would be freezing it and hydrolisis which would make an enzyme lose its properties.

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."