CHEM 105 EXAM 4 PRACTICE
QUESTIONS AND ANSWERS
Primary role for triacylglycerols in our bodies - Correct Answers -Energy storage
Cholesterol is used for the following purpose :
A. Membrane integrity
B. Steroid hormones
C. Vitamin D and Calcium metabolism
D. All of these - Correct Answers -All of these
Lipids in our bodies contain both polar and non-polar groups. Therefore, they can be
termed - Correct Answers -Amphipathic
Lipids in our membranes are mostly this type - Correct Answers -phospholipids
Why are membrane lipids mostly unsaturated - Correct Answers -maintain fluidity
Lipids in our cell membranes contain the following, and so are healthier than other types
- Correct Answers -Cis- fatty acids
Hydrolysis of dietary lipids takes place during digestion in our intestine through the
action of - Correct Answers -Lipase
In order for dietary lipids to be hydrolyzed , they must be emulsified through the action
of intestinal detergents derived from cholesterol termed - Correct Answers -Bile salts
Generally speaking , most unsaturated lipids come from - Correct Answers -Plants
Soaps , detergents, and lipids have in common that all are - Correct Answers -
Amphipathic
The main sugar in our blood is - Correct Answers -Glucose
Monosaccharides are also termed - Correct Answers -simple sugars
A common kitchen sugar would be - Correct Answers -sucrose
, Our bodies use the following enzyme to break down milk sugar in digestion - Correct
Answers -Lactase
Sugars, and many other biological chemicals, come in two forms, mirror images of each
other that are not identical, and for which only one of the two can be used by our
bodies. Such chemicals are said to be - Correct Answers -Chiral
Antibiotics , and many other prescribed medicines prevent enzyme action because they
are - Correct Answers -competitive inhibitors
Our metabolic pathways, responsible for things like biochemical synthesis and energy
mobilization, are controlled through either activators or these compounds shutting the
pathway down: - Correct Answers -non-competitive inhibitors
This is the number of different amino acids we typically find in protein - Correct Answers
-20
Simple sugars can shift their forms at their anomeric carbon during an equilibrium
between the Fischer structure and the Haworth structure , resulting in both the alpha -
form and the beta- form through the process known as - Correct Answers -mutarotation
The connection between two sugar molecules in either a disaccharide or a
polysaccharide, joining them wi the an oxygen atom between them is known as -
Correct Answers -Glycosidic bond
The main undigestible polysaccharide, yet is in our diet regularly, is - Correct Answers -
cellulose
Lactose intolerant individuals are missing the enzyme - Correct Answers -lactase
Carbohydrates may be used as energy storage molecules, particularly glycogen, in us,
but they contain quite a bit less energy than lipids, because carbohydrates are already
partially - Correct Answers -oxidized
A sugar generally associated with fruits would be - Correct Answers -Fructose
A sugar that is used in RNA structure and many other biological compounds but without
dietary significance is - Correct Answers -Ribose
A linear plant derived polysaccharide able to provide our bodies with considerable
nutritive value is - Correct Answers -Amylose
Humans lack the following enzyme , preventing us from eating wood or grass - Correct
Answers -Cellulase
QUESTIONS AND ANSWERS
Primary role for triacylglycerols in our bodies - Correct Answers -Energy storage
Cholesterol is used for the following purpose :
A. Membrane integrity
B. Steroid hormones
C. Vitamin D and Calcium metabolism
D. All of these - Correct Answers -All of these
Lipids in our bodies contain both polar and non-polar groups. Therefore, they can be
termed - Correct Answers -Amphipathic
Lipids in our membranes are mostly this type - Correct Answers -phospholipids
Why are membrane lipids mostly unsaturated - Correct Answers -maintain fluidity
Lipids in our cell membranes contain the following, and so are healthier than other types
- Correct Answers -Cis- fatty acids
Hydrolysis of dietary lipids takes place during digestion in our intestine through the
action of - Correct Answers -Lipase
In order for dietary lipids to be hydrolyzed , they must be emulsified through the action
of intestinal detergents derived from cholesterol termed - Correct Answers -Bile salts
Generally speaking , most unsaturated lipids come from - Correct Answers -Plants
Soaps , detergents, and lipids have in common that all are - Correct Answers -
Amphipathic
The main sugar in our blood is - Correct Answers -Glucose
Monosaccharides are also termed - Correct Answers -simple sugars
A common kitchen sugar would be - Correct Answers -sucrose
, Our bodies use the following enzyme to break down milk sugar in digestion - Correct
Answers -Lactase
Sugars, and many other biological chemicals, come in two forms, mirror images of each
other that are not identical, and for which only one of the two can be used by our
bodies. Such chemicals are said to be - Correct Answers -Chiral
Antibiotics , and many other prescribed medicines prevent enzyme action because they
are - Correct Answers -competitive inhibitors
Our metabolic pathways, responsible for things like biochemical synthesis and energy
mobilization, are controlled through either activators or these compounds shutting the
pathway down: - Correct Answers -non-competitive inhibitors
This is the number of different amino acids we typically find in protein - Correct Answers
-20
Simple sugars can shift their forms at their anomeric carbon during an equilibrium
between the Fischer structure and the Haworth structure , resulting in both the alpha -
form and the beta- form through the process known as - Correct Answers -mutarotation
The connection between two sugar molecules in either a disaccharide or a
polysaccharide, joining them wi the an oxygen atom between them is known as -
Correct Answers -Glycosidic bond
The main undigestible polysaccharide, yet is in our diet regularly, is - Correct Answers -
cellulose
Lactose intolerant individuals are missing the enzyme - Correct Answers -lactase
Carbohydrates may be used as energy storage molecules, particularly glycogen, in us,
but they contain quite a bit less energy than lipids, because carbohydrates are already
partially - Correct Answers -oxidized
A sugar generally associated with fruits would be - Correct Answers -Fructose
A sugar that is used in RNA structure and many other biological compounds but without
dietary significance is - Correct Answers -Ribose
A linear plant derived polysaccharide able to provide our bodies with considerable
nutritive value is - Correct Answers -Amylose
Humans lack the following enzyme , preventing us from eating wood or grass - Correct
Answers -Cellulase
