Exam 30: A: Nutrition and Metabolism

Unsaturated fats have double bonds in their fatty acid chains.

All types of complex carbohydrates are broken down in the body into simpler carbohydrates before they are absorbed.

Iodine can be called a trace element and a micromineral.

Fats produce more than twice the amount of calories per gram than do carbohydrates.

Protein catabolism occurs at the ribosome.

To maintain a constant body weight,caloric intake must equal caloric output.

The process of glycolysis produces four molecules of ATP,but the cell gains only two molecules of ATP.

Heat released in catabolism is used as an energy source for cell functions.

High blood concentrations of LDLs are associated with atherosclerosis.

Oxidative phosphorylation provides about 90% of the cell's ATP.

Adenosine diphosphate has only two high-energy phosphate bonds.

Ammonia is a byproduct of the catabolism of fatty acids.

Fats have a "carbohydrate-sparing" effect,or more correctly,a "carbohydrate-storing" effect.

Carbohydrates are the body's first choice of energy.As such,they are used exclusively for catabolism.

Glycolysis is unique in carbohydrate metabolism in that it is the only process that does not occur in the mitochondrion.

Intermediate products formed during the Krebs cycle are all acids.

Lipids can be broken down by glycolysis.

Cholesterol levels are particularly high in foods such as liver and egg yolk.

In the human body,anabolism would not be possible without catabolism.

Oxidative phosphorylation refers to the breakdown of ATP into ADP,phosphate,and energy in the presence of oxygen.