Introduction to Lipids Quiz

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Which type of fatty acid is typically found in whole milk, egg yolks, and coconut oil?

Trans fatty

Monounsaturated

Saturated (correct)

Polyunsaturated

What determines whether a fatty acid is classified as saturated, unsaturated, monounsaturated, polyunsaturated, or trans fatty?

The number of carbon atoms in the chain

The level of unsaturation

The presence of oxygen

The chemical bonds and structure (correct)

Which type of phospholipid is predominant in the cell membrane?

Glycerophospholipid (correct)

Sphingophospholipid

Phosphatidylcholine

Ceramide

What are waxes primarily composed of which makes them insoluble in water?

Long-chain fatty acids Signup and view all the answers

Which lipids are deeply involved in the myelin sheath surrounding most nerve fibers?

Sphingolipids Signup and view all the answers

Which of the following is NOT a major category of lipids?

Carbohydrates Signup and view all the answers

What type of compounds are lipids in terms of their solubility in water?

They are insoluble in water Signup and view all the answers

What is the main characteristic of triglycerides?

They are made up of glycerol and 3 fatty acids connected by peptide bonds Signup and view all the answers

What characteristic differentiates fats from oils?

Fats are solids at room temperature, while oils are liquids Signup and view all the answers

What type of compounds are terpenes and steroids?

They are hydrocarbons Signup and view all the answers

During which phase of the cell cycle does DNA replicate?

S phase Signup and view all the answers

What is the main characteristic that differentiates diploid cells from haploid cells?

Number of chromosomes sets Signup and view all the answers

In which stage of meiosis does the separation of homologous chromosomes occur?

Anaphase I Signup and view all the answers

What is the key event of telophase in mitosis?

Formation of daughter cells Signup and view all the answers

In which phase of the cell cycle does the cell actually divide and make daughter cells?

M phase Signup and view all the answers

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. Signup and view all the answers

What is the functional role played by cholesterol in the cellular membrane?

Cholesterol augments the basic structure provided by phospholipids. Signup and view all the answers

What type of motions can membrane proteins exhibit?

Lateral movement and rotation Signup and view all the answers

What is the primary orientation of the fatty acid tails of membrane phospholipids?

Away from the polar environment Signup and view all the answers

What characteristic differentiates the arrangement of membrane lipids from that of membrane proteins?

Lipids exhibit lateral movement, while proteins can flip between layers. Signup and view all the answers