Question 1

Why does the smell of food being prepared at the mall food court make you think about eating-even if you aren't hungry?

Accepted Answer

The answer of Why does the smell of food being...

Question 2

The presence of fat-containing chyme in the stomach signals the release of CCK from the small intestine

Accepted Answer

The presence of fat-containing chyme in the stomach signals the release of CCK (cholecystokinin) from the small intestine, not from the stomach. CCK is released in response to fat in the chyme when it enters the small intestine, not while it's still in the stomach.

Question 3

Only water and alcohol are absorbed to any significant extent by the stomach

Accepted Answer

This statement is true. Only water and alcohol are absorbed to any significant extent by the stomach, while other substances are absorbed mainly in the small intestine.

Question 4

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

Accepted Answer

The correct term for the process by which the kidneys reclaim substances is "reabsorption," not "absorption."

Question 5

Prebiotic foods contain live bacterial cultures that colonize the colon and have health-promoting benefits

Accepted Answer

Prebiotic foods contain fibers and other non-digestible carbohydrates that stimulate the growth and activity of beneficial bacteria in the gut. Probiotic foods, on the other hand, contain live bacterial cultures that directly add to the existing population of bacteria in the gut.

Question 6

Why is it important that the body is able to expend energy in order to make some transport reactions possible?

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Question 7

Why does poor nutrition often result in even further declines in nutrition and health?

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Question 8

The bacterium Escherichia coli (E coli) is the most common cause of urinary tract infections

Accepted Answer

E coli is the most common cause of urinary tract infections, accounting for about 85-90% of cases.

Question 9

Egestion refers to the process whereby urine is eliminated from the body

Accepted Answer

Egestion refers to the elimination of undigested waste material from the digestive tract through the anus, not the process of eliminating urine, which is called excretion.

Question 10

Why is it important that the human body have buffers?

Accepted Answer

The answer of Why is it important that the human...

Question 11

Once water-soluble nutrients enter the bloodstream, they circulate directly to cells throughout the body

Accepted Answer

Water-soluble nutrients first travel to the liver via the hepatic portal vein before circulating to the rest of the body.

Question 12

In the large intestine, slow, churning segmentation movements called haustral contractions help expose the undigested food residue to the absorptive (mucosal) lining of the colon

Accepted Answer

Haustral contractions are slow, churning movements in the large intestine that help expose undigested food residue to the absorptive lining of the colon.

Question 13

What are the functions of each of the four tissue layers of the GI tract?

Accepted Answer

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Question 14

What are digestive enzymes and what do they do?

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The answer of What are digestive enzymes and what do...

Question 15

Why are hormones critical to the proper functioning of the body?

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Question 16

The lymphatic system transports fat-soluble nutrients away from the GI tract

Accepted Answer

The lymphatic system plays a crucial role in transporting fat-soluble nutrients such as vitamins A, D, E, and K away from the gastrointestinal tract and into the bloodstream for distribution to various tissues and organs in the body.

Question 17

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

Accepted Answer

Celiac disease is an autoimmune disorder triggered by gluten, a protein found in wheat, barley, and rye. Glycogen is a carbohydrate and not associated with celiac disease.

Question 18

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

Accepted Answer

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Question 19

The fluid that surrounds cells is called the intracellular fluid

Accepted Answer

The fluid that surrounds cells is called extracellular fluid. Intracellular fluid is the fluid found inside the cells.

Question 20

Why are condensation and hydrolysis reactions referred to as "make and break" reactions?

Accepted Answer

The answer of Why are condensation and hydrolysis reactions referred...

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