Exam 3: Chemical, Biological, and Physiological Aspects of Nutrition

Atoms consist of subatomic units called protons, electrons, and _____.

The secretions needed for digestion include water, acid, enzymes, and _____.

When one atom losses an electron and another atom simultaneously gains one, what has taken place is called _____.

The loss of 1 or more electrons is called reduction.

What dose the muscularis do?

Of the two types of movement in the GI tract, which is the vigorous propulsion of food through the tract?

DNA is contained primarily in the _____ of a cell.

Using a recycling process called absorption, the kidneys are able to reclaim substances such as amino acids, glucose, and other important nutrients that would otherwise be excreted in the urine.

Which of the following aids in the circulation of dietary fat away from the GI tract?

Celiac disease is an inflammatory response to a specific protein called glycogen.

Which subatomic units are found in the nucleus of an atom?

A _______________ is a mixture of two or more uniformly dispersed substances. It is typically composed of a _______________ dissolved in a solvent.

Why is the transfer of electrons between atoms and molecules a very important chemical event?

In _______________, which is caused by the weakening of the gastroesophageal sphincter, gastric juices reflux into the esophagus and irritate the mucosal lining.

Nutrient absorption includes both the entry into and the exit out of the enterocyte.

What is the term for the type of tissue in the human body that provides a protective layer on skin and the lining of body cavities?

What regulates the rate of facilitated diffusion?

The layers of the GI tract carry out its functions of motility, movement, _____.

Blood is a connective tissue made up of cells and a fluid called _____.

_______________ allows a substance to be moved from a region of lower concentration to a region of higher concentration, but requires both energy and the assistance of a transport protein.