WorksheetsMacromolecues Test
Total questions: 12
Worksheet time: 24mins
Which statement explains why starches and lipids are insoluble in water?
Starches are formed by dehydration and lipids by hydration.
Starches have amino functional groups and lipids have carboxyl groups.
Starches have a 2:1 ratio and lipids have a 4:1 ratio of hydrogen to oxygen.
Starches have long polymer molecules and lipids have nonpolar molecules
Cells need lipids to function.
True
False
Phospholipids are a major component of what part of a cell?
Organelles
DNA
Cellular membrane
Cell wall
What can lipids be used for?
Energy storage
Immediate energy
Information storage
Speed up reactions
What molecule differentiates phospholipids from other lipids?
Nitrogen
Carbon
Phosphate
Oxygen
Which is a function of lipids?
to supply cells with quick–release energy
to provide the body with insulation
to store genetic information
to regulate cell processes
Why are lipids important for the survival of animals?
Lipids carry genetic information in the form of RNA.
Lipids store energy and vitamins that animals need.
Lipids provide animals with quick energy for routine tasks.
Lipids contain amino acids necessary for protein synthesis.
Which biological molecule serves as an energy storage molecule?
lipids
proteins
nucleic acids
carbohydrates
Which type of organic molecule should a person limit in order to lose weight?
Carbohydrates, because they store twice as much energy/gram. If they are not used, they will cause weight gain.
Lipids, because they store twice as much energy/gram. If they are not used, they will cause weight gain.
Carbohydrates, because they are nonpolar molecules and are insoluble in water.
Lipids, because they are nonpolar and soluble in water.
Which best describes lipids?
They are soluble in water.
They are insoluble in water.
They are all solids at room temperature.
They are are all liquids at room temperature.
Which is an example of a lipid?
fat
starch
glucose
hemoglobin
If a person’s arteries become clogged, he or she might have a stroke. What is the cause of these artery-clogging deposits?
lipids
proteins
nucleic acids
carbohydrates
