NTRI 2000 AU EXAM 2 QUESTIONS WITH COMPLETE
SOLUTIONS
what is the one thing that fruits and purified sugars have in common? -- Answer ✔✔
both provide glucose in abundance
why do plants use starch instead of straight glucose? -- Answer ✔✔ starch is insoluble
and cant be washed away
it is also nutritive for people since we can digest it
Why are carbs important for fuel? -- Answer ✔✔ because only two other nutrients
provide energy - fat and protein
what parts of the body crave carbs for fuel? -- Answer ✔✔ brain, central nervous
system, and red blood cells
the brain uses ______ as its primary fuel -- Answer ✔✔ glucose (carbs)
What are glycoproteins? -- Answer ✔✔ where sugars dangle from protein
what is the most important monosaccharide in the human body? -- Answer ✔✔ glucose
polysaccharides are chains of ______ -- Answer ✔✔ sugar
composed of long stands of glucose linked together -- Answer ✔✔ polysaccharides
what are examples of polysaccharides? -- Answer ✔✔ starch, glycogen, and fibers
(cellulose)
glucose molecules are linked in long occasionally branched chains -- Answer ✔✔ starch
, we can digest these bonds w our enzymes and retrieve the glucose -- Answer ✔✔
starch, glycogen
triglycerides make up what % of lipids? -- Answer ✔✔ 95%
3 classes of lipids -- Answer ✔✔ triglycerides, phospholipids, sterols
what is the makeup of triglycerides? -- Answer ✔✔ 3 fatty acids + 1 glycerol
lipids that have both a hydrophobic and hydrophilic end -- Answer ✔✔ phospholipids
what is the makeup of a phospholipid? -- Answer ✔✔ glycerol backbone + 2 fatty acid
chains + a phosphate group
phospholipids are _________ -- Answer ✔✔ emulsifiers (which means they keep fat
dispersed in water)
what is the most important type of lipid when it comes to cell membranes? -- Answer
✔✔ phospholipids
what is the makeup of sterols? -- Answer ✔✔ rigid carbon rings w/ no fatty acid tails
Synthesized in the liver -- Answer ✔✔ sterol
type of lipid used to make several important hormones -- Answer ✔✔ sterol
raw material for making emulsifiers in bile -- Answer ✔✔ sterol
when fat is mentioned it is usually concerning __________ -- Answer ✔✔ triglycerides
chief storage form of energy from excess food -- Answer ✔✔ fat
within a fat cell, lipid is stored in a _______, which can __________ -- Answer ✔✔
droplet, expand
SOLUTIONS
what is the one thing that fruits and purified sugars have in common? -- Answer ✔✔
both provide glucose in abundance
why do plants use starch instead of straight glucose? -- Answer ✔✔ starch is insoluble
and cant be washed away
it is also nutritive for people since we can digest it
Why are carbs important for fuel? -- Answer ✔✔ because only two other nutrients
provide energy - fat and protein
what parts of the body crave carbs for fuel? -- Answer ✔✔ brain, central nervous
system, and red blood cells
the brain uses ______ as its primary fuel -- Answer ✔✔ glucose (carbs)
What are glycoproteins? -- Answer ✔✔ where sugars dangle from protein
what is the most important monosaccharide in the human body? -- Answer ✔✔ glucose
polysaccharides are chains of ______ -- Answer ✔✔ sugar
composed of long stands of glucose linked together -- Answer ✔✔ polysaccharides
what are examples of polysaccharides? -- Answer ✔✔ starch, glycogen, and fibers
(cellulose)
glucose molecules are linked in long occasionally branched chains -- Answer ✔✔ starch
, we can digest these bonds w our enzymes and retrieve the glucose -- Answer ✔✔
starch, glycogen
triglycerides make up what % of lipids? -- Answer ✔✔ 95%
3 classes of lipids -- Answer ✔✔ triglycerides, phospholipids, sterols
what is the makeup of triglycerides? -- Answer ✔✔ 3 fatty acids + 1 glycerol
lipids that have both a hydrophobic and hydrophilic end -- Answer ✔✔ phospholipids
what is the makeup of a phospholipid? -- Answer ✔✔ glycerol backbone + 2 fatty acid
chains + a phosphate group
phospholipids are _________ -- Answer ✔✔ emulsifiers (which means they keep fat
dispersed in water)
what is the most important type of lipid when it comes to cell membranes? -- Answer
✔✔ phospholipids
what is the makeup of sterols? -- Answer ✔✔ rigid carbon rings w/ no fatty acid tails
Synthesized in the liver -- Answer ✔✔ sterol
type of lipid used to make several important hormones -- Answer ✔✔ sterol
raw material for making emulsifiers in bile -- Answer ✔✔ sterol
when fat is mentioned it is usually concerning __________ -- Answer ✔✔ triglycerides
chief storage form of energy from excess food -- Answer ✔✔ fat
within a fat cell, lipid is stored in a _______, which can __________ -- Answer ✔✔
droplet, expand
