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Module 3 TopHat Questions
Terms in this set (12)
Carbon atoms can form _______ (covalent, ionic, or hydrogen) bonds with up to __________ other atoms.
Hydrophilic molecules have what property? (Select all that apply)
A: they are nonpolar
B: they are polar
C: they readily interact with water molecules
D: they tend to repel or be repelled by water molecules
What molecules are the product of dehydration synthesis reactions?
C: water and polymers:
D: none of the above
During the breakdown of polymers, which of the following reactions takes place?
D: covalent bond
Hydrocarbons are composed of what elements? (Select all that apply)
A carbon atoms has ___________ electrons in the orbital closest to its nucleus and _____ electrons in its valence shell.
In what type of reaction is water used to break covalent bonds?
A: dehydration synthesis
What characteristics do saturated fats have? (Check all that apply)
A: they are solid at room temperature
B: they have single bonds within the carbon chain
C: they contain carbon, hydrogen, and nitrogen
D: they tend to dissolve in water easily
How do phospholipids differ from fats? (Check all that apply)
A: phospholipids have two fatty acids while fats have three
B: phospholipids have phosphate groups while fats do not
C: phospholipids do not contain a glyceride molecule while fats do
D: phospholipids are water soluble (because they don't contain any fatty acid) while fats are not soluble in water
Fatty acids are composed of what molecules?
The fatty acid chains of oils contain __________ (single or double) bond(s) which cause them to remain liquid form at room temperature.
What characteristic is shared by fats, oils, phospholipids and sterols?
A: fatty acids
C: water insolubility
D: fused ring structure
E: phosphate subunits
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