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BISC 115 Midterm 1
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Exam of 4 pages for the course BISC at BISC (BISC 115 Midterm 1)
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BISC 115 Midterm 1What are macronutrients? - correct answer-Fat, carbohydrates, and protein and they provide
energy. Carbon in these molecules combine with oxygen to produce energy for the body
Which macronutrient contains the most energy and why? - correct answer-Fat contains the
most energy because it has the most carbon molecules to combine oxygen
Does water provide energy? - correct answer-No. Water does require more energy than
alcohol to boil though because it has more hydrogen bonds
Water's three physical states - correct answer-Solid, liquid, gage. When it is ice, the
hydrogen bonds form an organized lattice structure that is less dense than liquid water. Salt
and sugar can melt ice by binding the individual water modules. This also results in a drop in
freezing temp. (which is why ice cream isn't just a block of ice milk
Water forms what kind of bonds? - correct answer-Hydrogen bonds very with other water
molecules and hydrophilic molecules (like sugar, salt, and alcohol)
Warmer water dissolves more... - correct answer-solids and liquids, but colder water
dissolves more oxygen
Fat - correct answer-fat (or lipids) are not polar, and do not form hydrogen bonds
Does fat mix well with water? - correct answer-No, they are hydrophobic. However and
emulsifier can bind to both fats and water to help them mix
Does fat have a higher or lower boiling point than water and why? - correct answer-Higher
boiling point than water because its such a large molecule, it requires more energy to
vaporize it
Carbohydrate types - correct answer-monosaccharides
Disaccharides
Polysaccharides
Examples of carbohydrate types - correct answer-monosaccharides (ex: glucose, fructose)
Disaccharides (ex: sucrose, lactose)
Polysaccharides (ex: starch, cellulose)
Is starch and cellulose digestible? - correct answer-Starch is digestible, cellulose isn't
Where is starch stored in plants? - correct answer-Granules. Its purpose is to store energy.
The animal equivalent is called glycogen
How do plants make sugar? - correct answer-Photosynthesis. Glycolysis is used to break
down glucose for energy
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