___ are considered bad cholesterol; high blood levels are believed to increase the risk for cardiovascular disease.
Which of the following is a characteristic of the electron transport chain?
The ETC occurs in the mitochondria.
Are characterized by one substance gaining an e- while another substance loses an e-.
The primary goal during the post-absorptive state is to:
Maintain glucose levels within a homeostatic range.
___ refers to reactions in which large molecules are broken down into smaller molecules.
___ is a substance in food used by the body to promote normal growth, maintenance, and repair.
The body's rate of kilocalorie consumption needed to fuel all ongoing activities is called the:
Total metabolic rate.
The Krebs Cycle and ETC.
Involves the removal of hydrogen, electrons, and CO2 from the substrate molecule.
Which of the choices below describes the pathway of cellular respiration?
Glycolysis, Krebs Cycle, ETC, and oxidative phosphorylation.
Which of the following molecules are considered key at metabolic crossroads?
Glucose-6-phosphate, pyruvic acid, and acetyl CoA.
Which of the following best describes negative nitrogen balance?
Protein breakdown exceeds protein synthesis.
When ketone bodies are present in the blood and urine in large amounts, it usually indicates increased metabolism of:
Which of the following food groups are considered good sources of complete proteins?
Eggs, milk, yogurt, meat, and fish.
Which of the choices below is not a fate of carbohydrates taken into the body?
Conversion to a nucleic acid.
The molecule that serves as the major source of readily available fuel for neurons and blood cells:
It is important to ensure that your diet is adequately rich in vitamins because:
Most vitamins are coenzymes needed to help the body utilize essential nutrients.
Which of the following mechanisms produces the most ATP during cellular respiration?
What process primes a molecule to change in a way that increases its activity, produces motion, or does work?
When a person's hypothalamic thermostat is set to a higher level than the actual body temperature, that person may:
In the case of a person who consumes a normal, balanced diet, proteins are essential to the body for all of the following except?
Production of energy.
Which of the following is correct?
Glycolysis relies on substrate level oxidation for the four ATP produced in this pathway.
Many factors influence BMR. What is the most critical factor?
The ratio of surface area to volume of the body.
The process of breaking triglycerides down into glycerol and fatty acids is known as ___.
Catabolism would be best described as a process that ___.
Breaks down complex structures into simpler ones.
Cholesterol has importance in the body because it ___.
Is a stabilizing component of the plasma membranes and is the parents molecule of steroid hormones.
Which of the following statements is false?
The amino acid pool is the body's total supply of amino acids in the body's proteins.
Which of the following is not a function of LDLs?
Transport cholesterol from peripheral tissues to the liver.
Transamination is the process whereby the amine group of an amino acid is ___.
Transferred to a keto acid.
Which of the choices below happens during the absorptive state?
Anabolic processes exceed catabolic ones.
Select the correct statement about proteins:
Proteins will be used by most cells for ATP synthesis if insufficient carbohydtrates are ingested.
Conditions that promote the oxidative deamination and energy use of amino acids include:
Excessive amounts of protein in the diet.
The term metabolism is best defined as:
Biochemical reactions involved in building cell molecules or breaking down molecules for energy.
The amount of ___ produced is probably the most important hormonal factor in determining BMR.
Which of the following is a normal consequence of the activation of the heat promoting center?
Release of epinephrine.
In gluconeogenesis, during the postabsorptive state, amino acids and ___ are converted to glucose.
Which of the choices below is not a source of glucose during the postabosorptive state?
Absorption of glucose from the GI tract.
Glycolysis is best define as a catabolic reaction based upon the:
Conversion of glucose into two molecules of pyruvic acid.
Which of the following statements best describes complete proteins?
Must meet all the body's amino acid requirements for maintenance and growth.
The primary reason elderly people should decrease their caloric intake:
Muscle mass and metabolism decline with age.
The term metabolic rate reflects the ____.
Energy the body needs to perform only its most basic essential activities.
___ is considered "good" cholesterol; high blood levels of this cholesterol are thought to be beneficial.
As proteins are broken down for energy, ___ is generated. The liver then converts this potentially toxic intermediate into ____.
Which of the following is a characteristic of The Krebs Cycle?
The Krebs Cycle generates a rich supply of the reduced coenzymes NADH and FADH2.