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

DNA is contained primarily in the _____ of a cell

Water and other essential substances are returned to the blood by the kidneys in a process called _____

The environment inside of the cell is called the _____ environment

In the GI tract, there is a single sphincter that regulates the flow of the luminal contents from one organ to the next

Fat-soluble molecules are absorbed into the _____ circulation

The general term or category for a non-energy-requiring mechanism whereby a substance moves from a region of higher concentration to a region of lower concentration is _______________

_____ in the large intestine help to break down undigested food residue

It is difficult for you to taste food when you have nasal congestion because the olfactory cells account for approximately 20% of taste

Which of the cell transport mechanisms requires energy?

Meat turns brown when exposed to air because the iron-containing proteins _____

Substances cross cell membranes by passive and active transport

The hepatic portal vein links the liver and the _____

The digestive system consists of the organs of the GI tract and _____ organs

Which of the five tastes that humans can sense are vegetarians least likely to experience?

Pancreatic enzymes and bile are released into the duodenum in response to _____

What controls the movement of food from the stomach into the duodenum?

As the pH of a glass of tomato juice decreases, it becomes _____

Subatomic units that are positively charged are called _____

Ions with an overall positive charge are called _____

The small intestine is divided into three regions: the duodenum, the jejunum, and the _____