1. the sum of the chemical reactions that occur inside body cells is collectively referred to as:
a. digestion
b. absorption
c. metabolism
d. hydrolysis

2. glycolysis is the metabolic pathway that:
a. splits glucose into two molecules of pyruvate.
b. generates glucose from glucogenic amino acids.
c. synthesizes glycogen
d. creates glucose molecules from glycogen.

3. a factor that promotes maximum production of atp in cellular metabolism is the presence of:
a. oxygen
b. carbon
c. nitrogen
d. chromium

4. when needed for a source of energy, fatty acids are broken down and become:
a. pyruvate.
b. acetyl coa.
c. glucose.
d. chylomicrons.

5. the first step in using amino acids to make atp is:
a. deamination.
b. transamination.
c. glycolysis.
d. anabolism.

Metabolism is the collection of life-sustaining chemical reactions in organisms. The three chief objectives of metabolism are the conversion of food/fuel to energy to run cellular systems, the conversion of food/fuel to building blocks for proteins, lipids, nucleic acids, and some carbohydrates, and the removal of nitrogenous wastes.

Glycolysis is a word used to define the metabolic pathway involving the breakdown of glucose into pyruvate and energy used to create adenosine triphosphate (ATP) and reduced nicotinamide adenine dinucleotide (NADH). The pathway occurs in nearly all organisms and is self-sufficient of oxygen, although the outcomes of glycolysis are sometimes decomposed with the help of atmospheric oxygen.

Cellular respiration is a collection of metabolic reactions and processes that take a position in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP) and then release waste products. The reactions involved in respiration are metabolic reactions, which separates large molecules into smaller ones, liberating energy in the process, as weak so-called "high-energy" bonds are substituted by stronger bonds in the products.

In chemistry, especially in biochemistry, a fatty acid is a carboxylic acid with a long aliphatic chain, which is both saturated or unsaturated. Most commonly occurring fatty acids have an un-branched series of an even number of carbon atoms, from 4 to 28. Fatty acids are normally not found per se in organisms, but rather as three main classes of esters: triglycerides, phospholipids, and cholesterol esters.

Deamination is the elimination of an amine group from a molecule. Enzymes that catalyses this reaction are called deaminases. In the human body, deamination leads place essentially in the liver, however, glutamate is also deaminated in the kidneys.