Select the true statements about the citric acid cycle.

a. the major reactants in the citric acid cycle are acetyl coa, nad + , gdp , and fad .
b. the citric acid cycle occurs in the mitochondria of the cell.
c. in the citric acid cycle, pyruvate is degraded to produce acetyl coa.
d. the citric acid cycle is an aerobic process.
e. two molecules of coenzyme a are produced per turn of the citric acid cycle.

a, b, d are correct about citric acid cycle

Explanation:

a. The major reactants in the citric acid cycle are acetyl CoA, NAD + , GDP , and FAD . acetyl CoA from glycolysis cycle, and other reactants are NAD, GDP and FAD reacts to form  NADH, FADH2 and GTP.

b)The citric acid cycle occurs in the matrix of  mitochondria of the cell.

c) The citric acid cycle is an aerobic process.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

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."