20 Questions
Which type of fatty acid is typically found in whole milk, egg yolks, and coconut oil?
Saturated
What determines whether a fatty acid is classified as saturated, unsaturated, monounsaturated, polyunsaturated, or trans fatty?
The chemical bonds and structure
Which type of phospholipid is predominant in the cell membrane?
Glycerophospholipid
What are waxes primarily composed of which makes them insoluble in water?
Long-chain fatty acids
Which lipids are deeply involved in the myelin sheath surrounding most nerve fibers?
Sphingolipids
Which of the following is NOT a major category of lipids?
Carbohydrates
What type of compounds are lipids in terms of their solubility in water?
They are insoluble in water
What is the main characteristic of triglycerides?
They are made up of glycerol and 3 fatty acids connected by peptide bonds
What characteristic differentiates fats from oils?
Fats are solids at room temperature, while oils are liquids
What type of compounds are terpenes and steroids?
They are hydrocarbons
During which phase of the cell cycle does DNA replicate?
S phase
What is the main characteristic that differentiates diploid cells from haploid cells?
Number of chromosomes sets
In which stage of meiosis does the separation of homologous chromosomes occur?
Anaphase I
What is the key event of telophase in mitosis?
Formation of daughter cells
In which phase of the cell cycle does the cell actually divide and make daughter cells?
M phase
Which statement accurately describes the arrangement of membrane phospholipids?
The hydrophobic fatty acid tails are directed towards the polar, aqueous fluids of both the cytosol and the environment.
What is the functional role played by cholesterol in the cellular membrane?
Cholesterol augments the basic structure provided by phospholipids.
What type of motions can membrane proteins exhibit?
Lateral movement and rotation
What is the primary orientation of the fatty acid tails of membrane phospholipids?
Away from the polar environment
What characteristic differentiates the arrangement of membrane lipids from that of membrane proteins?
Lipids exhibit lateral movement, while proteins can flip between layers.
Test your knowledge about lipids, which are naturally occurring non-polar compounds with simple functional groups. Learn about their characteristics, functions, and major categories such as fats, oils, phospholipids, waxes, terpenes, steroids, and prostaglandins.
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