Chapter Chapter 21: Nutrition & Digestion
 
Activities Quiz
 

1 .       When digested, proteins are broken down into _____. (Activity 21A) 

 glycerol only
 fatty acids only
 monosaccharides
 amino acids
 both glycerol and fatty acids


2 .       When digested, fats are broken down into _____. (Activity 21A) 

 glycerol only
 fatty acids only
 monosaccharides
 amino acids
 both glycerol and fatty acids


3 .       Starch is a type of _____. (Activity 21A) 

 disaccharide
 nucleotide
 polysaccharide
 fatty acid
 monosaccharide


4 .       Your small intestine can absorb ____ without their being further digested. (Activity 21A) 

 starches
 fats
 proteins
 fructose
 nucleic acids


5 .       Which of these enzymes begins the breakdown of starch? (Activity 21A) 

 bile
 disaccharidases
 lipase
 amylase
 nucleases


6 .       Starch can be broken down into the disaccharide known as _____. (Activity 21A) 

 lactose
 glucose
 sucrose
 fructose
 maltose


7 .       Protein digestion begins in the _____. (Activity 21A) 

 mouth
 esophagus
 stomach
 small intestine
 large intestine


8 .       What is the main component of gastric juice? (Activity 21A) 

 inactive pepsin
 amylase
 hydrochloric acid
 water
 bile


9 .       _____ is secreted by the _____ and acts to emulsify _____ in the _____. (Activity 21A) 

 Lipase ... small intestine ... fats ... small intestine
 Trypsin ... pancreas ... fats ... small intestine
 Nucleases ... pancreas ... nucleic acids ... stomach
 Amylase ... salivary glands ... starch ... stomach
 Bile ... liver ... fats ... small intestine


10 .       What acid is responsible for stomach acidity? (Activity 21A) 

 hydrochloric acid
 carbonic acid
 sulfuric acid
 acetic acid
 sodium hydroxide