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Science-Related Homework Help Health, Nutrition, and Food Sciences Topic started by: jumer01 on Mar 4, 2018



Title: Discuss the role of dietary cholesterol and the endogenous production of cholesterol and heart ...
Post by: jumer01 on Mar 4, 2018
Discuss the role of dietary cholesterol and the endogenous production of cholesterol and heart disease. What is meant by good and bad cholesterol?
 
  What will be an ideal response?

Q. 2

Discuss in detail the digestion, absorption, and transport of dietary lipids, including the sterols.
 
  What will be an ideal response?
 
  Fat digestion starts off slowly in the mouth, with some hard fats beginning to melt when they reach body temperature. A salivary gland at the base of the tongue releases an enzyme (lingual lipase) that plays an active role in fat digestion in infants, but a relatively minor role in adults. In infants, this enzyme efficiently digests the short- and medium-chain fatty acids found in milk.
 
  In a quiet stomach, fat would float as a layer above the watery components of swallowed food. But whenever food is present, the stomach becomes active. The strong muscle contractions of the stomach propel its contents toward the pyloric sphincter. Some chyme passes through the pyloric sphincter periodically, but the remaining partially digested food is propelled back into the body of the stomach. This churning grinds the solid pieces to finer particles, mixes the chyme, and disperses the fat into small droplets. These actions help to expose the fat for attack by the gastric lipase enzymean enzyme that performs best in the acidic environment of the stomach. Still, little fat digestion takes place in the stomach; most of the action occurs in the small intestine.

Q. 3

Describe the process of fat hydrogenation and discuss its advantages and disadvantages.
 
  What will be an ideal response?

Q. 4

Discuss the meaning and significance of trans-fatty acids in the diet. List four common food sources.
 
  What will be an ideal response?

Q. 5

What methods are used by the food industry to inhibit rancidity of the unsaturated lipids in foods?
 
  What will be an ideal response?

Q. 6

The DRI suggest that linoleic acid provide ____________________ of the daily energy intake and linolenic acid ____________________.
 
  Fill in the blank with correct word

Q. 7

Adipose tissue actively secretes several hormones known as ____________________proteins that help regulate energy balance and influence several body functions.
 
  Fill in the blank with correct word


Title: Discuss the role of dietary cholesterol and the endogenous production of cholesterol and heart ...
Post by: paroz on Mar 4, 2018
Content hidden


Title: Discuss the role of dietary cholesterol and the endogenous production of cholesterol and heart ...
Post by: jumer01 on Mar 4, 2018
Confirmed correct!


Title: Discuss the role of dietary cholesterol and the endogenous production of cholesterol and heart ...
Post by: paroz on Mar 4, 2018
Cool, thanks for replying back