Flashcards in Lipids Deck (42):
Why are lipids and fatty acids important?
Carry info and signal
What is an example of something lipids carry info for and signal?
What are some additional services that lipids and fatty acids are used for?
What is a fatty acid?
Carboxylic acid with a long hydrocarbon chain
What are three types of fatty acids?
What type of unsaturated fatty acid does the body produce?
What is an example of a storage lipid?
Membrane lipids are polar or non polar?
What type of lipid is not found in biological membranes?
Storage lipids (triglycerides)
Are storage lipids polar or non polar?
What is the primary energy storage molecule?
What are triglycerides important for organ systems?
They are the primary source of energy
Where do you get fatty acids from?
Dietary carbohydrates and proteins
What transfers free fatty acids?
What transfers triglycerides from adipose tissue to other cells?
What are three types of membranes formed by lipids?
What are three major membrane lipids?
What makes a phospholipid?
Glycerol or sphingosine linker
What makes a sphingolipid?
One fatty acid
And a head group ( phosphate, glucose, polysaccharide)
What is the function of sphingolipids?
Direct signaling activity
What is the function of glycolipids?
Anchor proteins to membranes
Sterols are necessary for what process?
What are functions of sterols?
Increase membrane rigidity
Reduce membrane permeability
Lipid raft constituent
What are three inflammatory lipids?
What makes a nucleotide?
What makes a nucleic acid?
Nucleotides connected by a phosphodiester bond.
What is the foundational molecule of life?
What are the functions of nucleotides and nucleic acids?
What direction is the genetic code read?
5' to 3'
What does RNA have that DNA doesn't?
OH on 2'
Uridine instead of thymidine
What are the two main sources of energy for life?
How do prokaryotes replicate?
Do eukaryotic cells have cell walls?
Where do you find DNA in prokaryotes?
How do prokaryotes obtain genetic diversity?
What do you find in a gram positive bacteria?
Exposed glycoproteins layer
Thick peptidoglycan layer
What happens if the plasma membrane is too fluid?
Loss of barrier function
What happens if the plasma membrane is too rigid?
Restricts cell shape and transport
What is a lipid raft?
An area that is cholesterol and sphingolipid rich
What does a lipid raft do?
Regulates signal transduction and endocytosis
What is endocytosis?
Internalization of the plasma membrane