Chapter 5: Lipids Flashcards
Which molecule is not formed by dehydration reactions?
Fatty acids
Four main categories for large biological molecules:
Proteins, bucolic acids, polysaccharides, and lipids
Animal metabolism only a small portion of monomers are used for synthesis of new macromolecules, the net result is that:
Water is consumed by animal metabolism
Polysaccharides, triacylglycerides, and proteins are similar in that:
They’re synthesized from monomers by dehydration reactions
Which is not a lipid:
- RNA
- steroids
- cholesterol
- wax
- phospholipid
RNA
A not harmful function of cholesterol is that:
A component of animal cell membranes
The characteristic all lipids have in common is that:
None of them dissolve in water
What is the result of adding hydrogens to vegetable oil?
It will stay solid at room temperature
Why are human sex hormones considered to be lipids?
They are not soluble in water
What modifications of fatty acids will best keep triglycerides solid at warmer temperatures?
Adding hydrogens and trans double
Bonds to the fatty acids
Polymers that contain sugars…
May store hereditary information, may store energy, and may protect cells
Which molecule is not a carbohydrate?
- starch
- lipid
- cellulose
- glycogen
Lipid
What about monosaccharides?
They can be classified according to spatial arrangement of their atoms
T or F:
Peptidoglycan is a polysaccharide found only in bacteria.
True
The function of cellulose
Structural component of plant cell walls
